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Home / Products / Primary Weapon Systems / Primary Weapons Systems 300 BLK MK109 MOD 1-M Complete Upper - 9.75"
Primary Weapons Systems 300 BLK MK109 MOD 1-M Complete Upper - 9.75"

Primary Weapons Systems 300 BLK MK109 MOD 1-M Complete Upper - 9.75"

Lowest Price
Price unavailable
MSRP
$1,029.49
Savings
No verified offer
Verified In Stock at
0 Stores
Updated
Aug 26, 2026
Compare Deals from 1 Retailers
Verified availability, then price
Rainier Arms
Rainier Arms
● Availability Unknown
$1,029.49

Specifications

Brand
Primary Weapon Systems
MPN
M109UB01-1F

Description

Specifications: Operating System: PWS Long Stroke Piston System, 3 setting Adjustable Gas Regulator Caliber: .300BLK Barrel Length: 9.75" Gas System Length: Pistol Barrel Twist Rate: 1:8 Muzzle Velocity: 2216 fps Muzzle Device: PWS Triad 30 Upper Receiver: PWS Proprietary Piston Upper, T6 7075 Forged, Anodized Handguard: PWS M-Lok(TM) 6.9" Handguard (1.7" width, 2.25" height) Charging Handle: Radian Raptor(TM) Ambidextrous Charging Handle

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