This Bear Creek Arsenal complete upper (Bear Creek Arsenal part no. UAF1016556MM4161) is chambered in 5.56 NATO on a 10-inch barrel with carbine-length gas, an M-LOK handguard, and a 1:7 twist built for a compact pistol-configured AR build.

Key Specifications

• Brand: Bear Creek Arsenal.
• Caliber: 5.56 NATO.
• Barrel length: 10 inches.
• Rate of twist: 1:7.
• Gas system: carbine length.
• Handguard: M-LOK.

Frequently Asked Questions

Can I put a shoulder stock on this upper? Not without prior ATF approval. This complete upper’s 10-inch barrel is under the 16-inch rifle minimum, so it must go on a pistol lower (no stock) or a Form 1-approved SBR lower to stay legal.

What gas system length does this upper use? Carbine length, matched to the 10-inch barrel.

Buy the Bear Creek Arsenal Complete Upper, 5.56 NATO, 10in, Carbine Length, M-LOK

Get the Bear Creek Arsenal Complete Upper, 5.56 NATO, 10in, Carbine Length, M-LOK from Bear Creek Arsenal, browsable in our full AR15 Uppers selection. Order from a Lubbock, TX gun shop for insured shipping.