Rosco Bloodline 11.5-inch 5.56 NATO Nitride Barrel

This Rosco Manufacturing Bloodline barrel is an 11.5-inch M4-profile barrel chambered for .223 Rem/5.56 NATO. It is constructed from 4150 CMV and finished with a Nitride process for enhanced surface hardness and corrosion resistance. The barrel uses a 1:7 rate of twist, making it compatible with a wide range of 5.56 projectile weights. Designed for short-barrel rifle and pistol configurations, it offers a compact option for suppressed applications and balanced handling.

Key Specifications

• The barrel measures 11.5 inches in overall length.
• Chambering is .223 Rem/5.56 NATO.
• The barrel is finished in Nitride for durability and corrosion resistance.
• Material is 4150 CMV steel.
• The twist rate is 1:7.
• The profile is an M4-profile barrel.
• The exterior color is black.
• Model designation is Bloodline.

Engineered for modern carbine use, the Bloodline 11.5-inch barrel balances compact dimensions with serviceable performance. Its 4150 CMV construction and Nitride finish provide a durable, service-ready platform for SBR and pistol builds, while the 1:7 twist accommodates commonly used 5.56 projectiles. For shooters assembling a compact, reliable carbine or pistol, this barrel delivers the basic specifications and build quality expected from a purpose-driven component.