About five years ago, the Department of Defense announced that SIG SAUER won the Army Modular Handgun contract. By the time of the announcement, there was little surprise. The P320 was reliable enough, accurate enough, relatively inexpensive, and by that time, was the only truly “modular” handgun in the running.
Since that then, SIG SAUER has doubled down, tripled down, all the downs downed on the modularity and versatility of the P320. There is now no other pistol on the market that features so many user-swappable variations, a staggering feat considering the relative youth of the handgun platform.
For the last several months, I’ve enjoyed the most aggressive Lego set on the market, shooting an extremely wide variety of slides, grip modules, barrels and small parts.
The P320 Fire Control Unit
The fire control unit (FCU) is the P320, at least as far as the law is concerned. This is the mechanism that houses the trigger and includes the rails upon which the slide is mounted. The P320 FCU is, obviously, included with each complete pistol sold. But beginning in 2020, SIG began selling the P320 FCU separately.
Availability is the hard part when it comes to the FCU. Demand far outstrips supply, and most of the places I called told me to expect an 8 to 12-week wait. SIG sent TTAG one to test, and I ordered another on the commercial market. It took a little over two months to arrive, and I paid about $350.
For individuals purchasing a P320 FCU from a licensed gun dealer, you’ll need to fill out an ATF Form 4473 just like you would any other firearm.
There are already multiple options for aftermarket triggers. The Apex Forward Set Trigger is a nice option that’s fairly easy to install yourself. I shot a friend’s and noticed that it did smooth the trigger out a bit and definitely shortened the reset.
A more comprehensive change is the Grayguns Adjustable Straight Trigger System. This lowers the trigger pull weight to as low as 4.0 lbs., smooths it up, and allows the user to adjust the overtravel as well. You also have your choice of trigger shoes.
This trigger is a bit more complex to install and will require you to almost completely disassemble the FCU. It’s very doable, and there are several videos online that will walk you through it, as long as you pay attention.
When it comes to disassembly and reassembly (and probably a lot of other things), I’m functionally mentally retarded. I learned long ago to take photos of every step and then simply backtrack their order for reassembly. This method has never done me wrong.
As it is, I’m happy enough with the stock SIG FCU trigger.
Since I had two Fire Control Units, I was able to measure the trigger pull of each. Using my Lyman digital trigger scale, one FCU measured an average of 5 lbs 6.2 oz over 5 pulls. The second FCU measured an average of 5bs 6.4oz.
Both of the triggers essentially feel like a mediocre 2-stage AR trigger. There’s some take-up slack, then a wall and one slight stutter before the break. Reset isn’t particularly short, but the trigger returns quickly and with a solid feel. It’s one of the better stock striker-fired triggers on the market.
Installing the FCU is incredibly simple and requires no tools at all. You simply push it down and into place, and then work the takedown lever through the holes in the Grip Module of your choice and the FCU itself. For this review I performed this task dozens of times. I did it with my eyes closed.
P320 Slides and Slide Assemblies
Stock from SIG SAUER
SIG SAUER has released a wide range of slide assemblies, both in size and style, and the aftermarket have followed suit as well.
The factory SIG slides should best be considered by their length. Those include the 4.7″ slide (as found on the standard military M17), the 3.9 (as found on the M18), and the 3.6″ (as found on current X-Series Compact or Subcompact models.)
In addition, there’s also different styles from SIG, to include the Standard, Optics Ready, and ProCut. You can purchase the naked slide, the entire slide assembly, the assembly with your choice of sights, and also choose between the SIG Rome1Pro installed or not.
The Standard and Optics Ready are self-explanatory. The Optics Ready models come cut for the SIG Romeo1Pro or the Leupold Deltapoint Pro.
The ProCut slides are a little fancy, with relief cuts near the muzzle, to include a half-moon cut at the muzzle itself.
Some slides don’t fit correctly on some Grip Modules, and it’s best to check the SIG website for each slide to see what will or will not work. The general rule is that the 4.7″ and 4.9″ slides won’t go on the X-Series Compact or Subcompact Grip Modules. However, since SIG has released specialized models, like the X-Five, it’s important to check on SIG’s website for the combination of slide/Grip Module you’re trying to complete.
But wait, there’s more factory options. Each one of the above slides can be purchased with different finish options and in different colors. Want Tan/Coyote? Easy. Bead blast stainless? Not a problem. Basic Black Nitron? All day every day.
Beyond the truly comprehensive slide choices from SIG, several other companies make aftermarket slides for the SIG P320.
Grey Ghost Precision GGP320 Slide
I’ve never found anything less than great quality from Grey Ghost Precision, and their aftermarket P320 slide, cut from a block of 416 Stainless Steel, for the P320 is no exception.
There’s some obvious aesthetic changes with the Grey Ghost slide. The forward serrations aren’t that much different, but the single slide cuts on the side are long and relatively straight, unlike the SIG ProCut’s oblong holes. In addition, the Grey Ghost slide includes a full triangular cut through the top of the slide, ending just prior to the slide. That’s the cut that has some real value, beyond prior to just looking cool, as the dark recess serves to eliminate any glare from the top of the slide.
In addition, coming from the midline off the slide, material has been removed at two different angle toward the top, giving the slide less real estate on the top surface. This provides a bit of an optical illusion, making the entire slide seem shorter in profile when compared to the stock or ProCut factory slide.
Grey Ghost advertises their slide has “tighter tolerances” than the factory SIG slide. That’s pretty hard to measure all the way around, but I could find a difference in one spot. Placing a Backup Tactical threaded barrel and a Grayguns 14# recoil spring and custom fat stainless steel guide rod into the M17 slide, I found the barrel moved .040″ inside the slide, at the chamber. Doing the same inside the GGP320 slide, movement at this critical area was cut in half. Now, either way, that’s very little movement, and you’d likely need to be a better shot that me for that to make a difference, but there is a difference.
The GGP320 slide comes cut for the Romeo1 or Romeo1 Pro, as well as the Trijicon RMR and Leupold DeltaPoint Pro. When installing my Romeo1 Pro, I found that no mounting shim was necessary. The fit was extremely tight, with perfect (to the naked eye) mating surfaces. As we’ll see later, I had zero issues with mounting the optic or firing extended strings.
The GGP320 slide comes in several finishes, including Grey and Black Diamond Like Coating, as well as FDE and Green Cerakote.
P320 Grip Modules
SIG SAUER Stock Standard Polymer Grip Module
Since the release of the P320, SIG SAUER has released a dizzying, changing, and confusing array of grip modules for the pistol. The basic module frames include the Full, Carry, and Compact.
On top of this, there’s also the X-Series grip modules as well. Originally, SIG released the P320 with a Sub Compact grip module as well. This has now been replaced with the X-Series Compact, designed for the 3.6″ slide. So there’s a Standard Full, X-Series Full, Standard Carry, X-Series Carry, Standard Compact, and the aforementioned X-Series Compact.
The general dimensions are the same, but there are some significant differences in the grip geometry between the standard and X-Series Modules. The original standard modules have a more pronounced arch in the backstrap and that backstrap carries higher into the frame. The X-Series modules have an overall more squared grip, and the section just below the beavertail is higher and more narrow on the gun, allowing for a higher grip.
The full and carry modules have the same height, and the same 17 round ammunition capacity. The Compact and X-Series Compact are shorter and require the smaller 15-round magazine to sit flush. The 17 round magazines will lock in and function with the smaller modules, they’ll just stick out a bit, as shown above. The 15-round mags won’t lock into the full and carry modules.
Beyond the different modules, each one also comes in sizes small, medium, and large. This size refers to the diameter and shape of the grip itself. There’s not a big difference in each size.
The smallest is 140mm in diameter, the largest is 150mm, but that small amount of difference really does change how the gun feels and where your trigger finger is placed on the trigger shoe. Careful consideration can get the shooter not just the right module, but the right size for each hand to ensure comfort, speed, and precision.
For instance, on any of the stock polymer modules, I prefer the large grip module. TTAG’s intrepid editor, Dan Zimmerman, prefers the medium. Dan’s current favorite P320 is a size Medium X-Series Compact module with a 3.9″ ProCut slide, as seen above.
In addition to the extremely wide array of polymer models offered by SIG, there are several variations and aftermarket options.
Grayguns Laser Sculpted Grip Module
The Grayguns grip module for the SIG SAUER P320 is a solid step up from the stock grip. There’s no real weight difference or size difference between it and the comparative length stock SIG module, and unlike the stock grip, the Grey Guns Laser Sculpted Grip Module only comes in size Medium. You can get the grip module in several colors, and the scale-like texture shows up well against the other-than-black versions.
The big upgrade here isn’t the pretty colors or textures, it’s the shape. The wide beavertail starts high up on the backstrap, and the trigger well is undercut. Both of these combine to give the shooter a high grip on a pistol with a not very low bore axis. The texturing also covers more of the surface area of the gun over the stock version, and it seems a little grippier as well.
At $115 for basic black (shown here) and $165 for colors, this grip module is a big step up in price from the stock SIG modules, but it feels like a commensurate step up in quality as well.
Mirzon Enhanced Grip Module
Jeremy already reviewed the Mirzon Enhanced Grip Module a couple of years ago.
All I can do here is second Jeremy’s review. It’s another polymer grip, but with overmolded rubberized grip surfaces. The grip includes finger grooves that line up well with my size large hands, and, just like Jeremy, I found the Mirzon grip allows for rock-solid purchase on the gun.
There’s no twisting in the hand during long strings of fire and I had no issues even when my hands got a bit sweaty. That said, it’s a slightly more rounded grip, and shooters with small hands may need something thinner. The trigger guard isn’t as undercut as some others, and mirrors the stock P320 option.
The SIG AXG Grip Module
Unlike all of the other strictly polymer grips, the SIG SAUER P320 AXG grip is all aluminum with replaceable grip panels. With a price of a penny shy of $400 on SIG’s website, it’s also a significant price departure from the inexpensive stock P320 polymer modules.
Between the wide array of grips I’ve tried with the P320 series, this one is my favorite. Of course, the first thing you’ll notice that’s different between this and all of the polymer grips is the AXG’s weight. The stock SIG polymer grips, regardless of size, weigh less than the thin paper and plastic box they come in. The AXG weighs in at 8.1oz.
That’s still not much, but compared to almost nothing at all, it’s something.
Since the checkering is cut into the harder aluminum, it’s also sharper, with a traditional long diamond pattern cut into the side panels and backstrap and a 25 lines per inch hatch cut into the front strap. Compared to a stock SIG grip, there’s also a bit more surface area that’s textured.
The geometry is also slightly different than the stock SIG grip modules. The AXG is extremely similar to the Grayguns grip module in that regard. The trigger guard on the AXG module is undercut and the beavertail is both wider and begins higher up on the grip than the stock module.
When combined with the aggressive texturing of the aluminum module, the grip shape provides the shooter with a lot of very grippy surface closer to the bore axis. Recoil control, with or without gloves, is exceptional, and I never found myself fighting the gun or having to readjust my grip over long strings.
If the extra weight and all of the sharp textures buy you any more recoil management, I can’t measure it. I used a PACT timer and ran a few drills, drawing from a Mitch Rosen holster I purchased off the SIG website. Of course, being a truly modular pistol, I could keep everything exactly the same, only a changing the grip module itself.
Running the same chassis and the same slide on top of the AXG grip vs. a Grayguns grip module, I could measure no real difference in my times from draw-and-fire-two or the Mozambique/Failure to Stop drill. The only time I got any discernible difference in times was when I fired the entire magazine and even then, that was a couple of tenths of a second on average.
The real advantage of the AXG grip isn’t its weight, it’s the exchangeable grip panels. The panels allow the shooter to fine tune their grip without swapping out the module (the AXG only comes in the Carry size). For me, I like the thin G10 grip panels that come with the AXG module, but I need the large backstrap to get just the right position.
The correct length of pull will reduce fatigue and should produce tighter groups and less muzzle movement, especially during fast fire. The same test that showed little to no difference in recoil management at speed showed that my groups were, on average, just about 1/4″ smaller at 25 yards, bearing out the simple common sense that how your finger interacts with the trigger matters.
Others
There are several other versions of the P320 grip modules available from other makers. Those include the X-Frame Legion version from SIG, modules from Wilson Combat, multiple “80%” options, and more. New versions are coming out all the time.
Small Parts
Just like everything else, all manner of parts and accessories for the P320 can be ordered directly from SIG’s website, or from a variety of manufacturers. For this review, I ordered a threaded barrel from SIG’s website and used TTAG supplied parts from Grayguns as well as barrels from Backup Tactical. I had zero issues with any of them. Everything fit and worked just fine the first time.
Holsters
There are more holster options for the P320 than there are slides and grip modules for the guns. I bought two always high-quality Mitch Rosen OWB leather holsters (one for the 4.7″ slide and one for the 3.9″) straight from the SIG website and used them throughout this review. They worked as flawlessly as I would expect.
Putting it all together
Since I had two Fire Control Units and a wide variety of slides, grip modules, multiple barrels and small parts, I had an absolute field day with this project. Actually, I had a few field months with it. I put at least 300 rounds through each slide (more than 500 for the GGP320), much of it suppressed. I shot various 9x19mm projectiles, commercial and hand loaded, in grains from 115 to 165, and bullet profiles to include FMJ and hollow points.
I never had any combination of slide/grip module fail with any round in any way. Nothing failed to fire. Nothing failed to load. No magazine failed to lock in place or failed to eject.
This is the reliability I’ve come to expect with all of the P320s I’ve fired, and there’s been more than a few. The SIG Romeo1 Pro optic never skipped a beat, and I mounted it on every single one of the optic-ready slides.
When shooting off bags, untimed, at 25 yards, I found no difference in precision regardless of what grip module I used if they were the same size. Precision did change, a bit, depending on which slide I used, as well as if I was using the Romeo1 Pro optic or the supplied irons.
With the Romeo1 Pro optic and its 6MOA red dot turned way down, in slow fire with bags, and wearing my prescription glasses to correct for my eye astigmatism, at 25 yards I found very little difference in group size when shooting the same rounds through the 3.6″, 3.9″, and 4.7″ slides, regardless of manufacturer or sytle.
As long as I was using the supplied Romeo1 Pro optic, nothing I shot was smaller than 2.3″ and nothing was larger than 2.6″, on average. That’s with any round in any slide or barrel.
The only difference in precision came when I was firing the Grey Ghost Precision full-length slide with SIG irons swapped from a TTAG supplied 3.9″ slide and no optic. This combination, with Wilson Combat’s 147gr JHP bullets fired very consistent 2″ groups. That’s the best of any combination, and any round.
The real, measurable differences came into play when I was shooting multiple rounds quickly, and especially when I was trying to hit smaller targets quickly.
There was no difference if I ran the same grip module with either the 3.9″ standard or ProCut slide. Just for fun, I closed my eyes and had a friend hand swap out the standard or ProCut on the same grip module and hand it to me. I shot with my eyes closed into a berm. I couldn’t reliably tell which slide was on the gun.
As far as grip modules, the only difference I felt, at least on similarly sized grip modules, was how well I felt my hand got a solid grip on the gun during the draw. When I practiced with each grip module, there was no real difference in time, but when the weather got warmer and my hands got sweatier, the AXG model felt a little more solid on the draw.
I ran every combination of slide and grip through the Fundamentals, Accuracy, and Speed Test (FAST), well as Bill Wilson’s 5×5 test. If you aren’t familiar with either of these tests, they’re great for measuring your overall skillset with a particular firearm, and they require relatively few rounds to give you solid feedback.
I didn’t run the FAST well enough with any of the combinations to earn a challenge coin, but with either the Grayguns or AXG Grip Modul under the GGP320 slide and the Rome1 Pro optic, I got maddeningly close. So close that I burned through a month of weekly shooting drills and hundreds of rounds (six rounds at a time) in the hopes of running the test under five seconds twice in a row. No dice.
The FAST showed the real difference. I shot that test more than a second faster with the combination above than any of the other recipe. The GGP320 slide simply moved less and was easier for me to get on target and stay on target.
On the smaller slides, the 3.9″ and 3.6″, the difference in times was smaller, but it was there, and those differences were magnified in I was running the iron sights instead of the optic. More weight at the end of the barrel really makes a difference, but any increase in sight radius will likely make a more significant change than anything else.
The great thing — and what truly sets the whole P320 “ecosystem” apart — is how well all of these components mix and match, and how you can get so many options straight from the SIG website. SIG has created a very handy configurator they call the Custom Works P320 Studio that lets you pick and choose and mix and match parts — from both SIG SAUER and other aftermarket makers — until you’ve built exactly the pistol that’s right for you.
Long story short, there are far more parts and options than I’ve gone over here, and new options are constantly being released.
For me, I found the AXG Grip module with the standard 3.9″ slide and the Romeo1 Pro works best as an EDC. But for pig hunting, I swapped the 3.9″ slide for the Grey Ghost 4.7″ slide, mounted the same optic, and ran it suppressed with an ancient AAC silencer.
If I wanted to carry while wearing a suit, the 3.6″ slide on an X-Series Compact Grip Module is small enough to boot carry…and all the with the same trigger.
With a bit of homework, and with just one part requiring an FFL and background check, anyone can create exactly the P320 they want…or create several mission-specific pistols that fit their needs, all built around that one Fire Control Unit.
A lot of companies are making “chassis” pistols, but no one else has carried through on the promise of true modular versatility like SIG SAUER has with the P320.
this article is fantastic if you opted for the 9mm 320. if you made the mistake of getting the 45acp version, well, you’re sol. sig pretty much abandoned that option…
This x 100.
𝑫𝒐 𝒚𝒐𝒖 𝒘𝒂𝒏𝒕 𝒕𝒐 𝒆𝒂𝒓𝒏 𝒎𝒐𝒏𝒆𝒚 𝒘𝒊𝒕𝒉𝒐𝒖𝒕 𝒊𝒏𝒗𝒆𝒔𝒕𝒊𝒏𝒈 𝒎𝒐𝒏𝒆𝒚? 𝑻𝒉𝒂𝒕’𝒔 𝒉𝒐𝒘 𝑰 𝒔𝒕𝒂𝒓𝒕𝒆𝒅 𝒕𝒉𝒊𝒔 𝒋𝒐𝒃 𝒂𝒏𝒅 𝑵𝒐𝒘 𝑰 𝒂𝒎 𝒎𝒂𝒌𝒊𝒏𝒈 $200 𝒕𝒐 $300 𝒑𝒆𝒓 𝒉𝒐𝒖𝒓 𝒇𝒐𝒓 𝒒𝒘𝒆03 𝒅𝒐𝒊𝒏𝒈 𝒐𝒏𝒍𝒊𝒏𝒆 𝒘𝒐𝒓𝒌 𝒇𝒓𝒐𝒎 𝒉𝒐𝒎𝒆.
𝑨𝒑𝒑𝒍𝒚 𝑵𝒐𝒘 𝒉𝒆𝒓𝒆__________𝒏𝒆𝒕𝒄𝒂𝒔𝒉𝟭.𝒄𝒐𝒎
And now, 18 months after your post, they’ve mostly abandoned the whole thing. There are a few different grip modules available but very little otherwise. .357 Sig is gone, .40 S&W is all but gone, available as a full-size only X-Change and in black only. Modularity sounds great to the marketing staff but, apparently, not to gun buyers and every platform that announced modularity ends up the same.
Even with the AR-15, with all of the options on how to build one, you don’t see people buying one set and then a bunch of modules to go with it. Just like there are a bunch of 9mm guns made, each different, there are a lot of AR-15 manufacturers making a lot of different AR-15s but modularity isn’t really as big of a thing as some say it is.
For instance, I need to change my barrel from 1:7 to 1:10-ish so I can shoot lighter ammunition when there are shortages of others. I’ll build a whole new rifle rather than swapping barrels in my existing gun. I might build a new upper, but then I can, in the same way I can make a whole new P320 with a new FCU, make a whole new rifle with a new lower. I’m not inclined to have one lower and two uppers; I’ll just have two rifles.
And this is the same, apparently, for the P320 and that’s likely why the number of options just keeps getting smaller and smaller: there’s just no market. And this really bugs me because I would love to mess around in the “options” and “modules” space and build out a bunch of different P320s but I never live in the 80% space where retail lives.
JWT
Well researched and written review.
I tried the P320 and found it was not my ideal pistol…but, lots of people seem to like it.
It’s getting to be prairie dog / gopher season up this way, do you have any fairly reasonably priced (ie. <$1,500) spotting scope reviews sitting in your outbox for publication?
You may want to look at the Leupold 20-60x 85mm SX-4. Midway currently has them on sale for $899 w/ free shipping.
I just received mine a few days ago.
Unfortunately, the CF tripod I picked up over the weekend was another $400.
I’m sorry but there are not.
I’ve come to absolutely love prairie dog hunting and find it one of the biggest and most comprehensive tests of precision marksmanship anywhere.
Being in your location, you probably know a lot more about it than I do, but in my experience you would be better served with a set of high quality 15 power or more magnification binoculars on a tripod than a spotting scope.
https://www.leupold.com/bx-5-santiam-hd-15x56mm-binocular would be high on my list.
Thanks for the suggestion. I’ll take a look at a pair. Had not considered high-power binocs.
The AXG reminds me of a striker fired P229. Is there a big difference in feel? I recall you saying you had a P229 DA/SA.
You know I didn’t think of it but that’s probably why I like it. It feels familiar.
All very true unless you have a full size .45….Sig, or anyone else, seem to have abandoned that caliber.
The 9mm seems to have won the caliber wars.
I love the “one pistol for everything” concept, but I would love it more if SIG invested half of what they spend to advertise that, on actually making it true.
They seem to introduce a new superficial / cosmetic change or “upgrade” every week, but the reality is – to put it in 1911 terms – the P320 can be anything from a Commander to a Government Model (essentially the same thing; a complete waste of modularity), and the P365 can be anything from an Officer’s Model to a Defender (essentially the same thing; a complete waste of modularity).
The P320 is a chunk – not M9 huge, but it’s a .40-width frame and will never be slim even if they did produce a shorter slide and barrel. The P365 is better in most respects, but the military contract means that the older, less-developed pistol will continue to get SIG’s attention.
If you start with the FCU, you’re stuck paying for all the parts (the trigger group) that most customizers replace first.
It would be awesome if they sold just the frame of the FCU, like the 80% FCUs.
One of the slickest accessories for the 10/22 takedown is an 8-inch (I think) barrel with a shroud extension that takes the combined length to over 16 in. It’s a neat way to dodge the need for an SBR tax stamp for a plinker.
Is there any reason why Sig couldn’t offer something similar, being able to drop the pistol fire control group into a pistol caliber carbine, as long as the overall length was legal?
It would be a neat way to have a suppressed 9mm carbine for home defense…
As I understand it, the law makes you choose between a pistol or a rifle. You might be able to legally go from a pistol to a rifle, but once it’s a rifle, you can’t go back to a pistol.
At least that’s how I understand it. I could be wrong. It’s weird.
I would expect it to be the same as it is with AR pistol lowers, which can go back and forth between pistol and rifle as often as you change underwear, as long as it started life as a pistol. But you are correct, it’s weird. Throw in SBRs and AOWs, and then it gets really weird.
I’d be tempted if they do come out with a carbine chassis and 16″ barrel.
JWTaylor, If a gun is first a pistol, you can go to a rifle and back to a pistol. It’s a good idea to make sure you have a picture or proof it was first a pistol, though. Even if it was first a pistol, having no pictures at all would be better than your first picture of it being a rifle. Otherwise, pistol to rifle to pistol is OK. Rifle to pistol, no matter what, is not OK.
The pistol mix and match is cool and all but I really want to see other firearms be built around the fcu. The Strike Rampage and FCU x01 are steps in the right direction.
I can have a drawer full of slides and grips but it’s still just a 9mm pistol. Gimme a PCC or rifle chassis that I can have delivered to my home and all I need to complete it is pop in my p320 fcu.
Why get a P320 when you can get a Glock! They are drop safe too XD
But really I think the ONLY advantage a P320 has to a Glock is better triggers. Even the best Glock triggers for hundreds of dollars are fine at best. The modularity is cool but how many people actually play dress up and switch components in and around? I know I would leave it as one set up and buy another FCU entirely. I might change accessories like threaded barrel or sights but that’s it. I don’t think the FCU and trigger is worth getting into. Great technology but sorry.
Because Gluck is the firearms equivalent of training wheels on your bike at age past 5yr.
There’s a reason a quarter of all semi auto pistol competitors use Glocks. I have yet to see one P320. Functionallity wise there’s not too much better out there. Low bore axis, high grip angle, tight springs. Nobody wants a Glock but everyone wants what a Glock can do.
The firearms pictured are certainly nice. On the other hand the P320 FCU is more complicated than need be. The firearm bore axis is high. The trigger guard undercut is shallow. Overall it appears clunky with no aerodynamics. The .040″ play noted between the barrel chamber and slide is too much to fill with flared points. .015″ play like on the SAR9 makes tightening lockup possible. The SAR9 also has FCU guide rails that can be adjusted to tighten the slide…That is if you know exactly how and have the jig blocks to do it which you don’t and won’t because it’s an in-house trade secret. The trigger bar in the SAR9 FCU can adjusted for trigger length of pull again if you know how and have the tools. If a SAR9 trigger pull is half way decent out of the box to the wall it can be improved with a striker assembly and slide bore cleaning, light component polishing, shortening the spring 1/16″and reforming the striker spring base accordingly. Glock spring cups will work in a pinch. When reassembled and the slide plunger is depressed to the unlock point the striker should drop by its own weight. The slide safety plunger also can be carefully removed and polished. The safety detent in the ejector block can be carefully removed and cleaned lubed to smooth the safety. These are things that do not cost a dime to do. Of course SAR9 piece parts are hard to come by especially if one flies into outer space which for time being gives the Sig and Glock an edge parts-wise.
Pre-Covid you could buy a stripped FCU off Gunbroker for $29.99.
$350 for one is absolutely insane at any price.
Especially when Sig Sauer sells this ENTIRE GUN to the US Government for $97 per unit.
I qualified with the M17 version in June. It is fine handgun.
The idea that it is modular or was the only modular entry is ignoring reality. The US Army does not want soldiers taking the FCU out of the weapons. The M17 and M18 share all end items (magazines, pouched, and holsters). However, the same is true of the other entries. The G17 slide and magazines will fit the G18, G26, G34, G43, G45, and G48. I am quite certain that other manufacturers have similar capabilities.
When I first viewed Costa demonstrating the Masada and later seeing the XM8 concept rifle, I knew that serious officers and NCOs had not been consulted. Unit armorers are little more than supply clerks. Often, they get a week long class when assigned the duty position. They do not travel around with a Snap-On van of weapon parts and accessories.
The same is true for multi-caliber sniper rifles. All of the weapon sergeants that I have served with only bring the caliber necessary for the current mission. And once they have zeroed a weapon, they do not disassemble it or swap out major components.
Modularity may be a good idea for an individual, but not for the military.
The modularity the Army demanded (and received) had little to do with the individual Big Army soldier, and everything to do with the supply, repair, refit and replacement of the guns themselves.
I appreciate your content on this site. We just disagree on this issue.
It is the Sunnah of my Prophet to carry a weapon which is why I am also interested in buying a new weapon to keep for my self-defence.
A major gun retailer is fire sale-ing the P320 in all it’s iterations. Tee last time this reseller did this on a Sig pistol, it was because Sig was discontinuing it. While I wouldn’t think the 320/M17 would be discontinued, Sig has a habit of this. Remember the P250 and P290?
From what this write-up says, I don’t have to buy a whole P320. I can select the parts I prefer and assemble a fully functional pistol. Is this correct? If so, has the P320 attained an AR-15 similarity?
Yes, you can build a P320 from parts.
Yes, in theory the P320 is modular just like the AR-15.
No, in practice the P320 offers nothing like the enormous variety of AR-15 choices. There are lots of silly cosmetic options, but in practice all the “modules” for the P320 are very similar because if the P320 or P365 were really as modular as SIG claims, nobody would have to buy both.
Awesome content. Legally you can move from a pistol to a rifle, but once it’s a rifle, you can’t go back to a pistol.
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Can you share your overall experience of buying an air conditioner online in the UAE? How was the process?
Thx for atrikel
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“Since that then, SIG SAUER has doubled down, tripled down, all the downs downed” And I love the idea of the modularity Sig advertises but since the “that then” you referred to in that phrase, Sig has zero-downed, or maybe single-downed and dropped most of the modularity. There are still a few grip modules available but it is in limited colors and features, no Sig .357 caliber change, no .40 guns available but, I hope since I just one, they still have the .40 X-Change kit; I’ll see what arrives – and the X-Change kits are available in any color you want, as long as it is black.
They did have, originally, stainless FCUs and natural steel FCUs, which would go with any color of grip but now they have only gold (tan) and black on their website but the black seems unavailable everywhere so I will end up with a tan FCU in my black X-Change kit.
Modularity has been done before but, in every case I know of – including the P320, the modularity goes away pretty quickly because of limited module options.
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