Description
The Rosco Manufacturing Bloodline 11.5″ M4 Barrel is a standalone AR-15 barrel chambered in 5.56x45mm NATO. Its compact 11.5″ length is intended for AR-pistol or short-barreled-rifle configurations, and the barrel is offered in New condition.
Rosco machines this Bloodline barrel from 4150 chrome-moly-vanadium steel with an M4 profile. The barrel and M4 barrel extension have a black nitride finish.
A 1:7 twist rate handles the rifling specification, while the carbine-length gas system uses a 0.750″ gas-block journal. At the muzzle, 1/2×28 threads provide the standard interface for compatible 5.56 muzzle devices, and the bore terminates in an 11-degree crown.
