CMMG30D810A CMMG BBL 300BLK 8″ 4140CM SBN

Description

CMMG BBL 300BLK 8″ 4140CM SBN

CMMG AR Rifle Barrel, 300 Blackout, 8″ Barrel, 1:7 Twist, Pistol Length Gas System, Nitride 30D810A

Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced. ALL NFA RULES APPLY

Features

• 8.0″;Medium Taper Profile
• 4140 Chrome Moly
• Salt Bath Nitride Finish inside and out
• 1:7 Twist
• 300 AAC Blackout Chamber
• Threaded 5/8-24
• Pistol length gas port
• .750 Gas Journal