Rosco Bloodline 10.5 in M4 1:7 1/2-28 5.56 NATO Barrel

Description

This Rosco Bloodline 10.5 in M4-contour barrel is designed for compact AR-15 SBR and pistol-style builds where a short, durable barrel is required. Finished in Nitride and built on 4150 CMV steel, it pairs a carbine gas system with a 1:7 twist to support a wide range of 5.56 NATO/.223 Rem loads. The barrel includes standard 1/2-28 muzzle threads for common muzzle devices and suppressor-ready setups; it is intended for responsible, lawful use.

Key Specifications

• The barrel measures 10.5 inches for compact handling and shortened overall length.
• The barrel is chambered for .223 REM/5.56 NATO.
• The twist rate is 1:7 to stabilize a broad range of bullet weights.
• The contour is an M4 profile for familiar AR-15 handling and sight radius compatibility.
• The finish is Nitride for surface hardness and corrosion resistance.
• Muzzle threads are 1/2-28 for standard AR-15 muzzle devices.
• The gas system length is Carbine to match common carbine and SBR configurations.
• The barrel material is 4150 CMV steel as specified in the product naming.
• The barrel weight is approximately 1.5 lbs.

Compact and purpose-built, the Bloodline 10.5 in M4 barrel delivers a balanced combination of durability and short-barrel performance for modern AR-15 platforms. Its nitride finish and 4150 CMV construction offer a resilient foundation for suppressed or unsuppressed use in SBR or pistol builds, while the carbine gas sizing and 1:7 twist support consistent cycling and broad projectile compatibility.