The PWS MK116 MOD 2-M is a premium, flagship AR-15 style rifle manufactured by Primary Weapons Systems. It is best known for abandoning the traditional direct impingement system of standard ARs in favor of a proprietary long-stroke gas piston system—a design heavily inspired by the AK-47 but scaled and refined for the AR platform.
This specific model features a 16.1-inch barrel, making it a versatile, standard-length rifle for civilian sport shooting, home defense, and duty use.
Long-Stroke Piston System: Unlike a short-stroke piston that taps the bolt carrier, the PWS system utilizes a single, continuous assembly connecting the piston face and the bolt carrier group. This drastically reduces carbon fouling and heat inside the upper receiver, making the rifle incredibly clean-running and reliable.
3-Position Adjustable Gas Block: Built with suppressors in mind, the easily adjustable gas system allows you to tune the rifle for regular unsuppressed shooting, suppressed shooting, or heavy/adverse conditions without over-gassing the system.
MOD 2-M Enhancements: As part of PWS’s top-tier line, the MOD 2-M features a forged upper and lower receiver that has been extensively skeletonized to shed weight while retaining structural integrity.
PicLok Handguard: The free-float handguard utilizes PWS’s patented PicLok system, which combines standard M-LOK slots with recessed Picatinny rail sections at the muzzle end, allowing you to mount accessories seamlessly without adding unnecessary bulk.
Fully Ambidextrous: The lower receiver features fully integrated, mirrored ambidextrous controls, including the bolt release, bolt catch, magazine release, and safety selector.
Caliber: 223 Wylde (safely and accurately shoots both .223 Rem and 5.56 NATO)
Barrel Length: 16.1 inches (1:8 twist rate)
Weight: ~6.5 lbs (unloaded)
Muzzle Device: PWS FSC556 (Flash Suppressing Compensator)
