CMMG 30DF80A Barrel Sub-Assembly 300 Blackout 16.10” Black Nitride Finish 4140 Chromoly Steel Material Carbine Length with Multi Role Profile for AR-15
CMMG’s Barrel Sub-Assembly is ideal for building your custom AR-15 upper group. It comes with properly installed M4 barrel extension. The barrel is constructed of 4140 chrome moly with a slat bath nitride finish and 5/8x24” threads.
Specifications
4140 CrMo, Salt Bath Nitride Finish
Barrel Sub-Assembly
Barrel
16.1"
300 Blackout
None
1:7
Carbine Length
Salt Bath Nitride
Black
16.10"
1:7"
300 AAC Blackout/Whisper (7.62x35mm)
Multi Role Profile
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