SKU: MPIMAG1079BLK
UPC: 840815128854
MPN: MAG1079-BLK
The Magpul BTR arm brace is built to improve single-handed control of large-format AR-15 style pistols. It installs onto mil-spec carbine-length receiver extensions, giving shooters a stabilizing point of contact where a fixed stock isn't an option. Magpul Industries designed this brace for handlers running AR pistols who want a firm forearm index without the bulk of an oversized support device. The mil-spec black version (model MAG1079) carries the same polymer construction and fit-and-finish Magpul is known for, and it drops into the same category of gear as the rest of our stabilizing braces.
This brace fits mil-spec diameter receiver extension tubes, which are the standard 1.148-inch buffer tubes found on most AR-15 pistol builds. The polymer body is engineered to hold its shape under recoil while keeping weight low, and the brace ships at roughly 1 pound as configured. Because it clamps to a mil-spec tube rather than a commercial-diameter one, buyers running a mil-spec pistol buffer setup can bolt it on without swapping hardware. Magpul kept the profile trim so it indexes cleanly against the forearm and doesn't add unnecessary length to the pistol. If your build uses a commercial tube, you'll want to confirm your receiver extension diameter before ordering.
Shooters build large-format pistols for shorter, more maneuverable platforms, and this brace supports that role by adding a stable rear contact point for one-handed employment. It works well on 5.56, .300 Blackout, and 9mm AR pistol configurations running mil-spec tubes. Pair it with a matching pistol grip and the right buffer components to finish out a compact build. Model MAG1079-BLK is made and engineered in the USA and ships from our FFL. Browse the rest of our grips, pads, and stocks selection to round out your pistol or short-configuration rifle.
It fits mil-spec diameter receiver extension tubes, the 1.148-inch standard found on most AR-15 pistol builds. If your pistol uses a commercial-diameter tube, this mil-spec version won't clamp correctly, so verify your receiver extension diameter before ordering.
This is Magpul model MAG1079, and TSA's SKU for the black version is MPIMAG1079BLK with MPN MAG1079-BLK. The UPC is 840815128854.
The brace attaches to the receiver extension rather than the barrel, so it works across AR pistol calibers including 5.56, .300 Blackout, and 9mm, as long as the build uses a mil-spec buffer tube.
Yes. Per Magpul, this brace is made and engineered in the USA.
No. The brace installs onto an existing mil-spec receiver extension. You'll need a compatible buffer tube and pistol buffer setup if your build doesn't already have one.
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