PWS Rifle Uppers for Sale

Primary Weapons Systems, Inc. (United States) cemented its role in Rifle Uppers by offering MK1 long-stroke piston AR-15 drop-on uppers by 2012, later broadening the MOD 1-M and MOD 2-M families and backing them with a stated sub-MOA accuracy guarantee. PWS rifle uppers center on a Kalashnikov-style long-stroke piston integrated into the upper with a tool-less, multi-position adjustable gas block and proprietary piston-specific handguard/trunnion architecture, delivering a cleaner-running, suppressor-tunable alternative to direct-impingement and short-stroke systems.