ASK AN EXPERTDescription
- 4140CM SBN
- Heavy Taper Profile
- 4140 Chrome Moly
- Salt Bath Nitride Finish inside and out
- 1:7 Twist
- 5.56x45 NATO Chamber
- Threaded 1/2-28
- Midlength gas port
- .936" Gas Journal
CMMG 5.56 AR15 Barrel, 16.1in, 1:7 Twist, Mid-Length Gas System (55D780A)
Perfect for building your custom AR15 upper group. Comes with properly installed M4 barrel extension. All barrel sub-assemblies are properly headspaced.
Warranty Information
| Caliber | 5.56x45 NATO Chamber |
| Barrel Type | Heavy Taper Profile |
| Length, in | 16.1" |
| Material | 4140 Chrome Moly |
| Twist Rate | 1:7 |
| Thread Pitch | 1/2-28 |
