Rosco Manufacturing BL-105-HB-300BLK-7-P Rosco 10.5" 300 Blackout SBR Barrel

This Rosco 10.5-inch 300 Blackout barrel is engineered specifically for Short Barrel Rifles (SBR) and pistol configurations, particularly when used with suppressors. Designed as a direct replacement for MK18 platforms currently chambered in 5.56 NATO, this barrel accommodates slightly longer forearms for compatibility with devices like the PEQ-15 and D-BAL series laser aiming tools.

Developed with valuable input from SOCOM end users and original caliber creators, this barrel is optimized for both subsonic and supersonic ammunition performance. Key considerations such as twist rates, gas port diameters, and lengths ensure that this barrel delivers exceptional accuracy and suppressor compatibility.

Specifications:
Barrel Length: 10.5 inches
Barrel Material: 4150 CMV
Caliber: 300 Blackout
Profile: Heavy Barrel
Twist Rate: 1:7
Gas Block Size: .750 inches
Thread Pitch: 5/8 x 24
Gas System Length: Pistol Length