The Primary Weapons Systems MK107 MOD 2-M is a short-barreled rifle chambered in 300 Blackout with a 7.75″ 416 stainless steel barrel and a 1:5 twist, built for heavier subsonic loads as well as supersonic ammunition. It weighs 5.2 lb unloaded.

It runs the PWS long-stroke piston system with adjustable gas settings and carries an FRC 2-port compensator compatible with PWS PUB mounts and Rearden Atlas suppressor mounts. The in-house ambidextrous lower is forged 7075-T651 aluminum with a flared mag well and built-in trigger guard, under a PicLok handguard that combines Picatinny and M-LOK mounting. It comes with a PTFE-coated mil-spec enhanced trigger (5.5 to 6.5 lb pull), the Q Shorty stock and Shorty buffer system, a Radian Raptor ambidextrous charging handle, and OD Green Cerakote on the receivers and handguard.

Specifications

• Brand: Primary Weapons Systems
• Model: MK107 MOD 2-M
• UPC: 811154034403
• Caliber: 300 Blackout
• Action: Semi-Auto, PWS Long-Stroke Piston
• Barrel: 7.75″ 416 stainless steel, 1:5 twist
• Muzzle Device: FRC 2-port compensator
• Handguard: PicLok (Picatinny and M-LOK)
• Trigger: Mil-spec enhanced, PTFE coated, 5.5 to 6.5 lb
• Stock: Q Shorty stock and Shorty buffer
• Finish: OD Green Cerakote
• Weight: 5.2 lb unloaded

Ships to a licensed FFL dealer for transfer. The buyer must pass the required background check and meet all federal, state and local laws.