Parvusimperator and the Attack of the Pistol Caliber Carbines

When first introduced, I, like many others, was not a fan of the PCC Division in USPSA. Frankly, I thought it was rather silly to shoot a carbine at a pistol match, even if the “P” in USPSA stands for Practical. Given some time, I’ve come to reconsider the division. And frankly, I could do with some carbine practice, even if that carbine is firing 9mm rounds. I love shooting carbines. It’s my first shooting love, if I’m to wax romantic for a bit. Anyway, this is an opportunity to get some carbine practice in, with the benefit that I don’t need a rifle-rated backstop. This allows me to get some close-in practice on pistol ranges, which are a bit easier to find in my current area. Plus they’re fun to shoot.

With my goals of ‘fun carbine practice’ in mind, let’s see what I’ll end up getting. I do need a competition-worthy PCC. Since I explicitly want this to drill carbine handling and shooting up close, I can ignore all of the faux-SBR “pistols” out there. I don’t have a desire to fill out a Form 1 on this. My goal, strangely enough, is to buy my PCC, add a red-dot sight of some sort, and get shooting. For once, I’m not looking to build or tinker my way to a solution.

So. Ignore the faux-SBRs and just about anything that isn’t intended as a turnkey-competition gun. And, non-SBR barrels are going to get me closer to the handling of my carbines, which are also not SBRs. I’m also going to require my PCC to use Glock magazines, because those are cheap and good and I already have a lot of them (yes, I have some of the 33-round mags). That disqualifies a lot of perfectly good guns, but I don’t care. These are my criteria.

Let’s cut to the chase, shall we? I’m getting a JP GMR-15. It’s AR-15 based, so the feel and controls are the same. JP makes really nice stuff, and their 9mm carbines ‘just work’. Like their other carbines. It takes Glock mags, and it even has a functional last round bolt hold open. Not that it matters for a competition gun, but it’s nice to have. Oh, and it can be had with a sweet trigger.

The GMR-15 is a blowback-operated gun, like most other 9mm AR conversions. Technically speaking, a gas-operated gun would be softer. But we’re talking about a 9x19mm round fired from about seven pounds of carbine. Recoil is not going to be an issue. We’re principally concerned with movement of the dot, which can be controlled by adjusting the weights of the buffer and carrier. If we want to.

All that it’s going to need is a dot.

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