This Rosco 18" 300 Blackout (300 BLK) Barrel is perfectly suited for precision carbine shooters that plan on running only supersonic ammo, or are building a well-balanced hunting platform.

Features :

• "18", Pistol Length Gas System"
• 5/8x24 Muzzle Threading
• 1/8 Twist
• 416 R Construction
• Bead Blasted Finish