Perfect for building your custom MK3 upper group. Comes with properly installed barrel extension. All barrel sub-assemblies are properly headspaced. ALL NFA RULES APPLY
CMMG, Barrel, 308 Win, 12.5″ Barrel, 1:10 Twist, Mid-length Gas System, 4140 CrMo, Salt Bath Nitride Finish
- 12.5″
- Medium Taper Profile
- 4140CM
- Salt Bath Nitride Finish Inside and Out
- 1:10 Twist
- 308 WIN Chamber (also accepts 7.62×51 NATO)
- Threaded 5/8-24
- Mid-Length Gas Port
- .750 Gas Journal
