CMMG 30B0E67AB Dissent MK4 300 Blackout 6.50″, Left Side Charging Handle, Armor Black, Zeroed Linear Comp, 4.60″ M-LOK Handguard, Picatinny End Plate, Fits AR-Platform
May 14, 2026
SHARK COAST 300-053-1000-21 556 16″ MONGOOSE
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CMMG 55BB40BAB Resolute MK4 5.56x45mm NATO 16.10″, Armor Black, M-LOK Free-Float Handguard for AR-Platform (No BCG or Charging Handle)
$552.14
CMMG 55BB40BAB Resolute MK4 5.56x45mm NATO 16.10″, Armor Black, M-LOK Free-Float Handguard for AR-Platform (No BCG or Charging Handle)
12 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 | 810103473461 |
|---|---|
| Manufacturer | CMMG |
| Manufacturer Part Number | 55BB40BAB |
| Action | .223 REM/5.56 NATO |
| Barrel Finish | Matte Black |
| Barrel Length | 16.1 |
| Caliber/Gauge | .223 REM/5.56 NATO |
| Length | 16.1'' |
| Rate of Twist | 1-7 |
| Style | Assembled |
