9mm 8.5" Mk9 Upper

Manufacture ID: 90B3BF0

The Mk4 PDW is CMMG's smallest, most compact upper equipped with the RKM7 KeyMod free floating hand guard, a nitrided 4140 CrMo steel barrel, and CMMG's lifetime quality guarantee.

Features:

- RKM7 KeyMod free floating hand guard
- 4140 CrMo steel barrel
- Small and light Weight

Specifications:

- Caliber: 9x19 NATO
- Barrel: 8.5" Barrel, Nitrided 4140 Chrome-Moly Steel, 1:10" Twist, 1/2"-36 Threaded
- Hand Guard: RKM7 KeyMod Handguard
- Sights/Gas Block: NA
- Bolt Group: Mk9 Bolt Group