The PWS MK1 AR-15 rifles are available in a variety of configurations and calibers. Find a Mod 1 or Mod 2 long stroke gas rifle for sale here, at Omaha Outdoors.

Primary Weapons Systems was formed by firearm enthusiasts in 2008. Starting out by producing muzzle devices, we tested our compensators on all different types of rifles - from M4s to AK …

Introducing the PWS MK1 PRO Line with the renowned PWS long-stroke piston system, tailored specifically for suppressor enthusiasts. If you're in search of a budget-friendly piston system …

Featuring the PWS long stroke piston system and a free-float MLOK handguard the MK1 weapons are still built with the internal system PWS owners know and love. Forward assist …

Primary Weapons Systems (PWS) MK1 Mod 1-M/Pro AR-15 Complete 223 Remington/5.56 NATO Lower Receiver $

PWS is the designer and manufacturer of the MK1 and MK2 series piston-driven rifles, a complete line of muzzle and rimfire biathlon-style sporting rifles.

The PWS MK1 MOD 2-M line, revamped for 2018, features the PWS long stroke piston system. While the internals remain the same as other PWS lines, the MK1 MOD 2-M offers a variety of …

The PWS Mk1 Mod-2M lower features everything you look for in a lower receiver and more. It comes equipped with an enhanced mil-spec trigger, a PWS enhanced buffer tube, an …

Introducing the PWS MK1 MOD 2-M pistol series, boasting the renowned PWS long-stroke piston system for unparalleled reliability. While maintaining the core integrity of other PWS lines, the …