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This barrel is 16 inch in length, made from 4150 Chrome Moly Vanadium steel with a QPQ Corrosion Resistant Finish. It is chambered in 9mm with a 1/2-28 x .400 full profile threads.

Designed to work with both Colt/RR and Glock style AR builds
Compatible with EPC upper receivers, as well as standard mil-spec upper receivers
9mm on an AR15 platform operates by blowback and does not need a gas block or gas tube
Threaded 1/2×28 to give you versatility when choosing a muzzle device
Integrated barrel extension
Since the “barrel extension” is an integral part of the barrel, the length stated is the true overall length. For example, an 11″ 9mm barrel has the same outer dimensions/length as a 10.5″ 5.56 barrel.

Aero 16" 9mm CMV Barrel