CMMG MK4 MT 4140CM .300 AAC Blackout 16.1 Inch Barrel Medium Taper Profile 5/8-24 TPI Salt Bath Nitride Finish
Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly head spaced.
- 1:7 Twist 4140 Chrome moly
- 5/8X24 thread pitch
- Medium taper profile
- Carbine length gas port .750" gas block Journal
| Manufacturer | CMMG
|
| Model | 30D120A
|
| UPC | 815835016238
|
| Caliber | 300 AAC Blackout
|
| Unit/Measure | ea
|
| Stock | 4
|
| Availability | Ships or available for pick up in 5 to 14 business days. |
