The Rosco Manufacturing Bloodline 11.5" M4 5.56 NATO Barrel is purpose-built for shooters who demand precision engineering in a compact package. Crafted from premium 4150 Chrome Moly Vanadium (CMV) steel and finished with a durable Nitride treatment, this barrel is designed to be the ideal foundation for any Short-Barreled Rifle (SBR) or pistol build. Rosco's Bloodline series reflects a commitment to modern carbine performance, incorporating properly managed dwell times, optimized gas port diameters, and carefully selected twist rates to deliver reliable function whether running suppressed, in a patrol carbine, or in a competition setup. With input from both civilian consumers and military end users, Rosco has engineered a barrel that meets real-world demands rather than relying on outdated specifications.
Product Highlights
- Premium 4150 CMV Steel Construction: Built from high-strength Chrome Moly Vanadium steel for exceptional durability and long service life in demanding conditions.
- Nitride Finish Inside and Out: Both the barrel and barrel extension receive a Nitride finish, providing outstanding corrosion resistance and improved wear characteristics.
- Optimized Carbine Gas System: A carbine-length gas system with a .750" gas block journal ensures reliable cycling across a wide variety of ammunition and suppressor configurations.
- 1/2x28 Threaded Muzzle: Standard 1/2x28 threading allows compatibility with a wide range of muzzle devices, including flash hiders, compensators, and suppressors.
- 1:7 Twist Rate for Modern Ammunition: The 1-in-7" twist rate is optimized for stabilizing heavier .223/5.56 NATO projectiles preferred by modern carbine shooters and military end users.
Specs
- Brand: Rosco Manufacturing
- Model: Bloodline
- Manufacturer Part Number (MPN): BL-115-M4-556-7-C
- UPC: 181969500029
- Barrel Length: 11.5"
- Barrel Weight: 20.82 oz
- Barrel Material: 4150 CMV
- Barrel Caliber: 5.56 NATO (.223 REM)
- Barrel Profile: M4
- Twist Rate: 1:7"
- Barrel Thread: 1/2 x 28
- Gas Block Size: .750"
- Gas System Length: Carbine
- Barrel Crown: 11 Degree
- Barrel Finish: Nitride
- Barrel Extension Finish: Nitride
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