The CMMG 16.1 Empire Profile barrel sub-assembly is engineered for 300 Blackout, featuring a medium-taper design crafted from 4140 Chrome-Moly steel with a Salt Bath Nitride (SBN) finish. The barrel incorporates an unthreaded muzzle with a recessed target crown. Key Features: 16.1 inch barrel length; 300 Blackout chambering; 4140CM steel construction; Salt Bath Nitride finish; Unthreaded muzzle design; Recessed target crown; Medium taper Empire Profile. Ships in 2-3 weeks due to hand-built production.