AR-15 300 AAC Blackout 9" 4150 CMV barrel 1-7 twist

• MADE FROM 4150 CMV AND HARDENED TO 26-32 RC AND STRESS RELIEVED, PLATED BLACK. 
• 1-7 RH TWIST
• CHAMBERED IN 300 AAC BLACKOUT
• .750"DIAMETER UNDER GAS BLOCK
• CARBINE LENGTH GAS SYSTEM
• 5/8-24 THREAD FOR ATTACHING MUZZLE DEVICE
• COMES WITH BARREL EXTENSION AND EXTENSION PIN INSTALLED. THIS BARREL ALSO HAS THE GAS PORT HOLE PRE-DRILLED. BARREL EXTENSION HAS THE M4 FEEDRAMPS.