Easter Sunday, a group of us went shooting at the KR Training range. Because what better way is there to celebrate the resurrection of Christ than to shoot off guns? Hey, didn’t the man say “If you don’t have a sword, sell your cloak and buy one?”
(Also: KR Training, official firearms trainer of Whipped Cream Difficulties.)
While we were out there, the actor we’ve hired to play Karl mentioned that you can get AR pattern lowers (and uppers) in pistol calibers…that take Glock magazines. Here’s an example. (Not endorsed by WCD: I have no experience with the company or product.) Since most folks who are serious Glock users have a bunch of magazines around, this is an attractive idea. Even more so when you know that you can get magazine extensions for those standard Glock magazines and load up even more rounds.
My mind immediately went in a particular direction, but I’m going to come at it from the long way around. Because that’s just the kind of hairball I am. Let’s start with the question: what calibers do Glocks come in?
I can almost visualize a .380 ACP Glock AR carbine (or an AR pistol). The vision I have of it in my head is that it would be a kind of cute plinking gun…that shoots relatively expensive ammo and doesn’t have a fun switch. It reminds me of the old MAC-11, but even less useful. (Though the AR platform carbine would perhaps be more reliable.)
9mm seems to be where the AR/Glock action is, and for good reason: 9mm ARs are fairly popular in various places, 9mm ammo is relatively cheap, and this seems like a very practical pistol caliber carbine. Perhaps even more so if you pay for the tax stamp and make it a short-barreled rife. I think a lot of folks are looking at these, even without the SBR tax stamp, as good home defense weapons: easier to handle, point, and shoot than a pistol, without the possible over penetration issues of 5.56.
You could make the same argument for .40 S&W, except that the ammo isn’t as cheap as 9mm. and I don’t think it has the same following that the 9mm carbine has in the tactical community.
.45 ACP could be an interesting build. I don’t see a lot of tactical operators talking about operating tactically with .45 ACP carbines. But I don’t hang out with a lot of tactical operators, either. Feel free to correct me if I’m wrong.
.45 GAP? Well, that’d be weird. The Winchester ballistics calculator on my phone says that .45 GAP will drop a little less and have slightly more velocity at 50 yards. But my impression is that .45 GAP is a dying caliber (even though Glock still chambers guns in it) and is maybe a little more expensive than .45 ACP by a few dollars a box for comparable ammo. However, I haven’t shot or bought .45 GAP, so don’t take that as gospel truth. Check prices at your local dealer or online ammo vendor.
.357 SIG? Ah. That’s the first place my mind went. I remember .357 SIG being touted as having a flatter trajectory than the .357 Magnum, but the same punch at range, higher capacity, and the ability to actually feed it in auto pistols. That same Winchester calculator (which only goes out to 50 yards on the iPhone) does show slightly less drop and a slightly lower velocity for the .357 SIG at 50 yards. If I can find a better calculator, I’d love to run numbers out to 100 yards.
Apparently, I’m not the only person who has this thought. there’s an interesting discussion over at Better and Better where Matt G mentions much the same idea (and also responds to a question from your humble blogger about the current role of the police shotgun).
And finally: 10mm? Why not? I like this idea, too. It reminds me of Jeff Cooper’s “Thumper”. I could see a SBR version of this working perhaps as a compact police carbine, but more so in Cooper’s original conception: a personal defense weapon for tank crews and other people who need something they can carry and deploy in tight quarters. I think I’d pick a 9mm or .357 SIG version for my daily use. But if I was in an appropriate military position, I’d build up a few 10mm ARs for experimental purposes in the sandbox.
More crankery after the jump.