Firearms manufacturer

Primary Weapons Systems

Primary Weapons Systems in the reference: 84 gun models.

Active Boise, ID, United States 2000–present

Overview

Coverage in the reference and the shop, counted at build
Records	Count	Open
Gun models	84	Notable models
Accessories	3

Primary Weapons Systems (PWS) is a Boise, Idaho manufacturer known for long-stroke piston-driven AR-platform rifles and pistols. Their proprietary Enhanced Reliability Operating System (EROS) uses a long-stroke piston — a key differentiator from short-stroke competitors like LWRC and HK. Founded in 2007, PWS also produces suppressors and muzzle devices.

Also recorded as PWS, Primary Weapons.

Sources and provenance

Manufacturer PWS — PWS — official site archived copy

Notable firearms

84 models in the firearm database. Collectible and service designs first, then the newest.

Primary Weapons Systems MK116 6mm ARC 16-inch Rifle · 2021
Primary Weapons Systems MK118 6mm ARC 18-inch Rifle · 2021
Primary Weapons Systems MK107 MOD 1 Pistol 5.56x45mm 7-inch Pistol · 2013
Primary Weapons Systems PWS MK116 5.56mm 16-inch Rifle · 2010
Primary Weapons Systems Diablo Pistol 5.56x45mm 9-inch Pistol · 2021
Primary Weapons Systems MK1 Mod 2-M Rifle · 2021
Primary Weapons Systems SC Series 5.56 Pistol · 2021
Primary Weapons Systems Summit Ti Rifle · 2021
Primary Weapons Systems MK1 300 BLK Pistol · 2020
Primary Weapons Systems MK216 .308 Rifle · 2020
Primary Weapons Systems MK216 Mod 2 Rifle · 2020
Primary Weapons Systems Summit Rifle · 2020

All 84 models

Counts are read from the reference and the shop at build time and change as records are added or corrected. Maker names in the reference are matched to this page through a reviewed alias list, not by spelling alone.