Rosco Manufacturing Bloodline 14.5 in 5.56 NATO 1:7 Nitride Barrel

Description

The Rosco Manufacturing Bloodline barrel is a 14.5 in M4-contour, mid-length gas system barrel chambered for .223 Rem/5.56 NATO. Built to the Improved Upper Receiver Group concept used in USASOC specifications and finished with a Nitride treatment on 4150 CMV steel, it delivers a controlled gas curve for consistent dwell times. The 1:7 twist rate supports stabilization of a wide range of common 5.56 bullet weights while the mid-length gas spacing smooths the gas impulse for reliable cycling in carbine-class builds.

Key Specifications

• The barrel length is 14.50 inches.
• The chambering is .223 Rem/5.56 NATO.
• The rate of twist is 1:7.
• The listed material/construction is 4150 CMV.
• The finish is Nitride.
• The gas system length is Mid-Length.
• The contour is M4.
• The muzzle threads are 1/2-28.
• The fit is specified as AR-15.
• The barrel weight is 2 lbs.

This Bloodline barrel suits compact carbine and range-focused AR-15 builds where a mid-length gas system and M4 contour offer a balanced combination of handling and consistent cycling. Its Nitride finish and 4150 CMV construction provide durable surface protection and proven material characteristics for regular use. For shooters seeking a shorter-profile barrel with managed dwell times and a 1:7 twist for a broad selection of 5.56 loadings, the Bloodline delivers a straightforward, function-focused option.