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Mfg Item #: 30DF80A
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.
| Type | Rifle |
|---|---|
| Model | AR-15 |
| Twist | 1:7" |
| Finish | Black Nitride |
| Length | 16.1" |
| Series | MR |
| Barrel Type | Chrome-Lined Chrome Moly Vanadium |
| Barrel Features | .625"-24 tpi |
| Caliber Or Gauge | 300 AAC Blackout/Whisper (7.62x35mm) |