Rosco Bloodline 14.5" M4 barrel in 5.56 NATO features nitride-treated 4150 CMV steel. Purpose-built for patrol and duty carbine builds with M4 platform compatibility.
The Rosco Bloodline 14.5" barrel represents the next evolutionary step in M4 platform barrel design. Built specifically around the M4 carbine platform, this barrel delivers the reliability and accuracy you need for patrol, duty, or tactical applications.
The nitride finish provides exceptional protection against rust and wear, ensuring your barrel maintains accuracy through extended use. The 4150 CMV steel offers the strength and reliability that professionals demand. At 14.5 inches, this barrel strikes the perfect balance—long enough to deliver effective velocity for 5.56 NATO rounds, yet short enough for easy handling in tight spaces.
Whether you're building your next duty rifle or upgrading an existing carbine, the Rosco Bloodline barrel delivers the performance and durability you can count on.