Nope. No drilling, no pinning, no filing: We already did the hard parts for you. Just tighten two screws and you’re good to go.

It fits any mil-spec AR-15 lower with a standard, 5.56/.223 “Multi-caliber” mag well. If you can stuff a STANAG or PMAG into it, our adapter fits too. No more need to shell out for boutique, single-purpose lowers that will only dine on the finest Austrian polymers. Think about it: Would you rather spend your time filling out 4473s, or mag dumping into trash? Yeah, that’s what we thought.

Our adapters are intended for use with mil-spec pistol caliber uppers utilizing a straight blowback (non-locked breech) bolt, with a Glock or hybrid Colt/Glock sized feed lug. They are not compatible with CMMG rotary-delayed blowback systems, or rotating bolt locked breech systems. (Most roller/bearing-delayed systems should work, but since these are not standardized patterns and subject to design changes by the manufacturers, we hesitate to make any definite statement on the matter.)

.45ACP Pro Tip: The best function is achieved by use of bolts that do not have the small protruding dingus (It’s a technical term. Don’t look it up) illustrated below:

 

Bolts with the dingus will do in a pinch, but have occasionally induced some minor feed issues in our testing, while those without have proven to be 100% reliable.

Since the adapter remains attached to the individual magazine, you will likely want one adapter for each magazine you intend to use. This revolutionary approach of adapting the magazine to the gun allows the seamless use of stock controls, as well as yielding a product that is both affordable and utterly bomb-proof: We’re just that good.

Fear not, range-LARPer: Since the Model 19-15 emulates the exterior dimensions of a standard pattern AR-15 magazine, it will fit in standard mag pouches, and especially well in those designed for 20 rounders. You can rest easy in the knowledge that all those countless hours you spent matching shades of FDE to your eyeshadow were not in vain.

Unfortunately, 1911 magazines don’t lend themselves to this functionality without the addition of fragile moving parts that would compromise the robust and affordable nature of our design. Try to think of it as microdosing the AK-owner lifestyle.

As with any blowback pistol-caliber AR, it’s advisable to install a heavier than stock buffer to reduce bolt velocity and reduce recoil impulse, especially if you're running hotter ammunition. Specific weights will depend largely on your personal preference, barrel length, and chosen ammunition, but if you’re daunted by tinkering the rule of thumb is “The heavier, the better," and 10oz seems to be a fairly universal fit for both 9mm and .45ACP.

We also recommend installing a heavier (aka “Extra Power”) flat-wire buffer spring for added reliability by way of more positive feeding. Remember: Jams belong on toast.

We highly recommend it. This was our preferred setup throughout our testing stage, as rifle length buffers ran flawlessly for us in both 9mm and .45ACP.

Retro rifle enthusiasts rejoice!

Absolutely, as we designed the Model 19-15 to be universal. If you can stuff it into a 1911, it’ll feed from our adapter. Please send us video of your .30 Luger PCC build, you absolute lunatic.

We presently do not, though if we experience a demand from overseas, we’ll certainly look into doing so. We’re kind of like wild animals: If you feed us, you’ll never get rid of us. Feel free to reach out!

Totally. The adapter is neither firearm, nor magazine, and thus is not regulated by any existing state firearms legislation. In fact, it’s a great gateway to build a PCC in states with restrictions on magazine capacities, and is fully functional in a fixed-magazine configuration AR build. Checkmate, California.

We’ve experienced excellent reliability with a wide variety of bullet designs and weights, but as with any firearm, your mileage may vary, and will be largely dependent on the feed cone of your barrel and the quality of the ammunition itself.

A good rule of thumb if you're building an AR45 is that if a particular load feeds well in your 1911, it will most likely work in your carbine.

As Henry Ford famously said, “…any color so long as it is black.”

That said, we base our offerings off of customer demand, so if there’s a particular shade you’d like to see, feel free to let us know…Or you could just rattle-can it: I’m not your supervisor.

Absolutely. Our adapters are built with ruggedness and hard use in mind. We’ve dropped our test models both intentionally and otherwise more times than we can count, and we can say with confidence that they will outlast even the magazines that they're attached to.

TL;DR for the gen Z crowd: YEET IT.