The PWS MK1 MOD 1-M line features the PWS long stroke piston system, and is favored for it’s extremely robust nature. Internally, this line offers the tried and true system that PWS owners have grown to know and love. Featuring a free float 8.9″ M-LOK® handguard, forward assist, 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, the MK1 MOD 1-M is a no-nonsense tool for when you need a high value option that is relentless and unstoppable.
The MK109 Mod 1 upper has a 9.75″ 1:8 twist 4150 CMV barrel with a pistol length long stroke piston. It comes with a complete bolt carrier group, Radian/PWS Raptor charging handle, and a Triad 30 compensator.This MK109 Mod 1 upper is ready to slap on your lower of choice. Will fit and align with most spec AR-15 lower offerings.
FOR MORE INFORMATION LIKE A COMPLETE BREAK DOWN OF UPPER OFFERINGS, PLEASE CLICK ON THE “ADDITIONAL INFO” TAB
Every 5.56 model is chambered in .223 Wylde. This means you can safely shoot 5.56 NATO or .223 Remington ammunition.