The Primary Weapons Systems MK109 Mod 1-M, Upper Receiver, Fits AR-15, 300 Blackout, 9.75" Barrel, 1:8" Twist is an upper receiver for AR-15.
The Primary Weapons Systems MK1 MOD 1-M line of upper receivers feature the PWS long stroke piston system. Internally, this line offers the tried and true system that PWS owners have grown to know and love. Featuring a free-float MLOK handguard, forward assist controls, and a more true to mil-spec design, the MK1 MOD 1-M line is a go-to for not only civilians, but also Law Enforcement. With the fully forged upper, the MK1 MOD 1-M is a no-nonsense tool for when you need a high value option that is relentless and unstoppable.
PWS bring back the original MK109 in 300BLK. The 9.75" barrel length provides excellent reliability with a range of ammunition and still function well, with or without a suppressor and without the need for an adjustable gas system. The MK109 includes the Triad 30 Compensator.
Features
- PRIMARY WEAPONS AR-15 MK1 MOD 1-M UPPER RECEIVER ASSEMBLY 300 BLACKOUT M-LOK
- FEATURES
- Long stroke piston system
- M-LOK handguards
- Includes Radian Raptor Charging Handle
- 1:6 barrel twist rate
Specifications
- Brand: Primary Weapons Systems
- Fits: AR-15
- Caliber: 300 Blackout
- Color: Black
- Finish: Anodized
- Barrel Length: 9.75 in
- Manufacturer Part #: MK1-M1U-300BLK-9
- UPC: 811154033451
