Rosco Manufacturing Bloodline 10.5" 300 BLK Heavy 1:7 Twist Black Nitride Pistol Barrel

Rosco Manufacturing Bloodline 10.5" 300 BLK Heavy 1:7 Twist Black Nitride Pistol BarrelThis Rosco 10.5" 300 Blackout (300 BLK) barrel was designed for SBR and Pistol use in conjunction with suppressors. It was made to be a direct replacement for any MK 18 platforms currently in 5.56 NATO. The 10.5" barrel is also perfect for carbines that require a slightly longer rail to comfortably run PEQ-15s, D-BAL (series), or any laser aiming devices. ALL NFA RULES APPLY!Our Rosco 300 Blackout barrels were created using input from SOCOM end users and some of the original creators of this caliber. Every barrel was designed to optimize the original role of the 300 Blackout, to make it suppressor-friendly and accurate. We aim to get you the performance you seek from these AR-15 barrels when running sub-sonic or supersonic ammo (depending on barrel length). Twist rates, gas port diameters, and lengths were all considered when we set out to make these. Let's say that we don't like leaving things to chance.Specifications Barrel Length: 10.5" Barrel Weight: 21.4 oz Barrel Material: 4150 CMV Barrel Caliber: 300 BLK Barrel Profile: Heavy Twist: 1:7 Barrel Thread: 5/8 x 24 Gas Block Size: .750 Gas System Length: Pistol Barrel Crown: 11 Degree Barrel Finish: Nitride Barrel Extension Finish: Nitride