Sig Sauer P320 M18 - New USA Army Handgun

Updated 49 months ago

Hey, everybody, welcome back to gun.deals. Today, on the table, we have a SIG Sauer P320 M18. Let’s get this review started.


Alright, folks, as I said, this is the military version of the P320. This version of the gun has been adopted by a couple different of military outfits out there as their new sidearm.

sig-sauer-review

What does it come with, well, it comes with a 17-round metal mag, these are metal, and it comes with two 21-round mags, again, they’re metal, and these are actually made in Italy, so it makes me believe these are probably Mec-gar mags. Mec-Gar makes excellent magazines for a lot of different companies so they’re definitely good to go, don’t worry about that, and It does come with your SIG hard case.

What I wanted to do is we’ll turn the camera angle around, we’ll put this down on the table, we’ll go over its features, I’ll show you how to take it apart and things like that and just show you what makes this gun so very cool. Be right back with you.

Alright, yeah, let’s take a nice close look at the gun. We’ll start at the bottom, obviously, you’ve got your magwell, you’ve got this polymer lower here with the SIG Sauer logo, it’s got some nice texturing pretty much all the way around here.

sig-sauer-close-look

You do have this nice thumb groove right here to rest your thumb right in there and then you can get a nice positive grip on the gun.

Moving up you do have your mag release right here, it can be switched around to go on this side, so if you’re a left-handed shooter you can easily switch that around which is very cool. You do have a nice undercut here also, under the trigger guard again, and then kind of a little bit of a beaver tail right here, so you can get nice, high grip on the gun, making it very controllable for shooting.

The end here, of the trigger, we do have some more serrations here, depending on how you like to hold your gun, you might like that. We’ll go over the trigger in just a second here.

sig-sauer-serrations

Moving up we do have an ambi safety. I actually, personally, I’m not a huge fan of safeties on my guns, I do see the purpose of them for a lot of people. I, personally, typically don’t run them, but if you want something that’s kind of clone correct military, you know, for being in the military, obviously you want to go with the safety on there. Also does have a slide lock here and this slide lock is also ambidextrous on both sides which is awesome.

Moving along you have to kind of your typical SIG takedown lever right here, we’ll show you how to take this gun in just a second.

Moving along you have a 1913 pic-rail here, it’s not proprietary or anything like that, so you can attach any lights that you need on there, which is very cool also.

Moving up to the slide this is actually a PVD coating and underneath this PDV coating is a stainless steel finish, so even if you wear this off over time your slide should be good and you shouldn’t have any rust or anything like that.

You do have some nice serrations on the front and back to get a nice grip on that slide, for your press checks or racking, whatever you’re doing, so there’s some nice serrations on the front and back. You do have some engraving at the front here, let me move up here see if we can see it, obviously P320 M18.

And then let’s move up to the sights here. The sights are pretty good, you know, they’re… I forget that to focus, so you can see hopefully that the front sight there is actually white and these are night sights which is nice, then you don’t have to go and buy them, upgrade, you know, upgrade the sights and things like that. They do shine green at night. I would have liked them to put on the X-ray sights so they have on a lot of the other guns like P365, I think the green is easier to pick up, but they are nice sights nevertheless.

sig-sauer-sights

The other nice thing is it comes with an optic ready cut and you’ll notice there’s no screws on here to take this plate out, to put your optic on there. The screws are actually underneath and when we take this down I’ll show you those screws.

Alright, let’s go over the trigger, we’re gonna use Wheeler trigger scale right here, and let’s put this on here and see what we get.
5.5 pounds!

Trigger pull, it comes in approximately 5.5 pounds after several tries, so let’s actually go over the trigger feel here, let me show you. You’ve got a little bit of take-up here and then, well feels like you’re at the wall, but you’re actually just got a little bit more take-up and then you hear the thunk of the brakes. I like the brakes to be a little more crisp, a little more tactile, but it’s not too bad, it’s reminiscent of a P365 brake, for me not as thunky, as I’m gonna call it, but it’s not too bad.

sig-sauer-trigger

Let’s check out the reset, you’re a little bit let out. Very positive, crisp reset, that reset was very nice and then that break again. I’m show that reset one more time. So, the reset is nice and I did notice that when I was shooting that it was very tactile and very positive on the reset, which was really nice. There’s not a ton of let out so getting follow-up shots is pretty easy.

To take this gun down is really simple, just like most other SIG’s, you’re just gonna put the slide back, you’re going to rotate this down.
If you have a mag in here you won’t be able to turn this down, ok, so sure you eject the mag, make sure, obviously, your mag is clear. Put the slide down, let this slide go forward and we are taking a part.

Let’s go over the slide first. The two screws I was mentioning for the optics plate is right here, these are your two screws, so a bit of a different location than what we’re typically used to, but that is the location of them. You have a dual-action guide rod spring here like so, and then you have your barrel, barrel’s 3.9 inches, and this is your barrel. The overall length of the gun is 7.5 inches.

sig-sauer-barrel

What makes the P320 so very cool in my eyes is how modular these guns are, they’re, you know, kind of like the AR-15 of the world, right. Whatever you wanna do to this you pretty much can do.

Alright, and one of the cool things is like you’ll see like this is a serial number here, it looks like it’s a part of the frame, but it’s actually not. The part that’s serialized is the fire control group in here, so what makes this so modular is you can just pop out this takedown lever, pop out this fire control unit, stick it any other lower that fits and there’s just endless options.

I really like the Wilson combat grips, but if you’re buying this gun, obviously, you kind of like the… probably like the fact it’s the M18, the copy of the military gun, maybe you don’t want to change it, but if you do want to you can. I do like to use something just plastic so I won’t damage the gun, and you’re just gonna push that lever through and then just wiggle this out like so, and that’s out, and then you’re just gonna pull up on the fire control unit and that’s it, that is fully dismantled, ready to go in another gun, so it’s really, really cool.

I think this was a requirement by the military that they wanted something that was super modular, so if something is wrong with the grip they can pop out the fire control unit, stick it in another grip and you were good to go again.

This is the heart of the gun, this is the only part that, again, you would really need to, you know, obviously to sign an FFL or anything like that. Everything else you can switch out, have delivered to your house or whatever else.

sig-sauer-taken-apart

Very, very cool system, super, super modular, tons of aftermarket parts for these guns, very, very cool.

Alright, and to put it back together just go in reverse.

Alright, now we are back together, so let’s go over shooting. Shooting was, it was good, right out of the box, it’s an accurate gun. I was pulling my shots initially a little down and to the left.

Anytime, these are like the first couple mags, anytime you’re getting a gun, you know, you kind of have to get used to that gun, again, how it shots and things like that, and I took my time a little more, these are just at 10 yards, you know, I’m hitting pretty much where I want, these were, this was from one of the first mags and I kind of reused the target and, as you can see here, I started getting used to the gun a little bit more.

sig-sauer-target

I put about 300 rounds through 115 grain ammo, zero issues and the more I got used to the gun the more accurate I was getting with it for sure, but it’s a really cool gun, it’s definitely accurate enough. I’m sure the gun’s more accurate than I am. I love the modularity of these guns. Just the sheer fact, you can change pretty much anything on these guns that you want, if, you know, there’s a huge aftermarket for it.

sig-sauer-shooting

As I said, if chances are if you’re buying this gun you’re wanting it as a probably a military clone gun or you like the look of it, but if decide later down the line that you want to switch something out, you can switch the frame out, the slider, sights out, triggers out, whatever you want you can change out, very cool.

What’s my overall thoughts on it? I really like it, I really like there’s a lot of cool features, as I said, the modularity of this gun, it’s definitely accurate out of the box, it’s got the upgraded sights, it’s got the, you know, the optics cut already ready to go, and, so, yeah, for the price, I mean, they’re a little bit more than say your standard Glock, but you get a lot more on this gun feel than your standard Glock, again, upgraded sights, optics cut, things like that.
Yes, you can buy a Glock like that, it’s just gonna cost you a lot more or if you upgrade it’s gonna cost you a lot more just for an example, so very cool gun, I could see why the military chose it.