Primary Weapons Systems MK109 MOD 1-M 18-M109UB0B, Upper Receiver, Fits AR-15, 300 Blackout, 9.75 in Barrel

The MK1 MOD 1-M line features 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 and lower receivers" the MK1 MOD 1-M is a no-nonsense tool for when you need a high value option that is relentless and unstoppable.

9.75" 300BLK Barrel

Barrel Twist Rate 1:8

Muzzle Velocity 2264 fps

PWS Triad 30 Muzzle Device

PWS Proprietary Piston Upper, T6 7075 Forged, Anodized

PWS M-Lok 6.9" Handguard

Radian Raptor Ambidextrous Charging Handle

Accessories: Radian Raptor
Type of Barrel: 1:8
Barrel Length: 9.75"
Description: MLOK
Finish: Anodized
Fit: AR-15
Caliber: 300 Blackout
Manufacturer: Primary Weapons Systems
Manufacturers Part Number: 18-M109UB0B
Model: MK109
Model**: Mod 1
Type: Upper
Sub Category: Complete Upper Receivers
Color: Black

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