Rosco Manufacturing Bloodline 5.5″ 9mm M4 1:10 Twist Black Nitride Barrel
Bloodline 5.5″ 9mm Barrel: This Rosco 5.5″ 9mm Barrel was primarily designed for suppressed carbines/ pistols where the handguard will be run over the rail. It will give you the flexibility of running a suppressed platform that offers the most compact size possible without sacrificing performance. Twist rates have also been taken into account in order to optimize performance for a multitude of rounds that you may also be running out of your duty/ concealed carry pistol, in order to allow a “cross-platform” ballistic familiarity. ALL NFA RULES APPLY!
Our Rosco 9mm barrels are perfect for sub-caliber carbine platforms. We have taken the time to understand the purpose of these platforms and design a barrel that will support them effectively. It is our goal to get you the performance that you seek out of these barrels, whether you are running suppressed, defense ammo, sub-sonic ammo, or supersonic ammo (depending on barrel length). Twist rates and lengths have all been taken into account when we set out to make these barrels.
Specifications
- Barrel Length: 5.5″
- Barrel Weight: 11 oz
- Barrel Material: 4150 CMV
- Barrel Caliber: 9 mm
- Barrel Profile: Medium
- Twist: 1:10
- Barrel Thread: 1/2 x 28
- Barrel Crown: 11 Degree
- Barrel Finish: Nitride
- Barrel Extension Finish: Nitride








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