CMMG 33D190C Barrel Sub-Assembly 8.6 Blackout 16.10″ Black Nitride 4140CM Barrel
January 16, 2026
Underwood Ammo 743 Gas Check 44RemMag+P 340gr Hard Cast Flat Nose 20 Per Box/10 Case
January 16, 2026
CMMG 30B12BBAB Resolute MK4 300 Blackout 16.10″, Armor Black, M-LOK Free-Float Handguard for AR-Platform
$908.57
CMMG 30B12BBAB Resolute MK4 300 Blackout 16.10″, Armor Black, M-LOK Free-Float Handguard for AR-Platform
2 in stock
Top off your next build with this RESOLUTE Mk4 Upper Group. Chambered, this upper group is a staple for any collection and comes ready to pair with the AR15 lower group of your choice.
| UPC | 810097502420 |
|---|---|
| Manufacturer | CMMG |
| Manufacturer Part Number | 30B12BBAB |
| Barrel Length | 16.10" |
| Caliber/Gauge | .300 AAC Blackout |