Primary Weapons Systems MK111 Mod 1-M Upper 7.62 X 39 11.8″ Barrel

Primary Weapons Systems MK111 Mod 1-M Features

The MK111 Mod 1-M Upper Receiver utilizes the PWS Long Stroke Piston System with a 3-setting adjustable gas regulator, providing increased reliability and reduced maintenance compared to traditional direct impingement systems. The upper receiver is constructed from T6 7075 forged aluminum, ensuring strength and longevity.

The 11.85″ barrel, chambered in 7.62×39, is optimized for a wide range of shooting applications. The carbine-length gas system ensures smooth operation and reliable cycling. The PWS M-Lok 11.05″ handguard offers ample space for accessory mounting while maintaining a slim profile. Measuring 1.7″ in width and 2.25″ in height, the handguard provides a comfortable and ergonomic grip. Additionally, the included Radian Raptor Ambidextrous Charging Handle ensures ease of use for both right- and left-handed shooters.

Primary Weapons Systems MK111 Mod 1-M Specifications

• Brand: Primary Weapons Systems
• Model: MK111 Mod 1-M Upper Receiver
• Caliber: 7.62×39
• Barrel Length: 11.85″
• Gas System Length: Carbine
• Barrel Twist Rate: 1:8
• Muzzle Velocity: 2741 fps
• Muzzle Device: PWS Triad 556
• Operating System: PWS Long Stroke Piston System with 3-Setting Adjustable Gas Regulator
• Upper Receiver: PWS Proprietary Piston Upper, T6 7075 Forged, Anodized
• Handguard: PWS M-Lok 11.05″ Handguard (1.7″ width, 2.25″ height)
• Finish: Anodized Black
• Charging Handle: Radian Raptor Ambidextrous Charging Handle
• Compatibility: Fits AR-15