CMMG Group 300 AAC Semi-Automatic Rifle Upper is a 300AAC Blackout chamber caliber upper that has a 16 inch barrel M300 profile. It is made of WASP treated 4140 chrome moly steel with a 1 in 7 inch twist and 5/8 - 24 inch threaded. This upper has a low profile gas block and is in the M16 bolt group.
CMMG Group 300 AAC Semi-Automatic Rifle Upper Specifications:
- Caliber: 300 AAC BLACKOUT Chamber
- Barrel: 16 inch M300 Profile Barrel, WASP Treated 4140 Chrome-Moly Steel , 1:7" Twist, 5/8-24 Threaded
- Hand Guard: K9 4 Rail Free Float Tube
- Sights/Gas Block: Low Profile Gas Block
- Bolt Group: M16 Bolt Group