Primary Weapons Systems
Primary Weapons Systems for sale — buy online from verified sellers
Long-stroke piston performance.
Known for long-stroke piston-driven AR rifles like the MK series, Primary Weapons Systems builds rugged, reliable modern rifles. Browse the PWS lineup below and buy from verified sellers.
No Primary Weapons Systems listings right now
There are no current asks or community listings for Primary Weapons Systems. Check back soon or browse other brands.
Explore the Primary Weapons Systems lineup
The model families that define Primary Weapons Systems.
About Primary Weapons Systems
Primary Weapons Systems (PWS), based in Boise, Idaho, is known for bringing long-stroke gas-piston operation — the system used in the AK and M1 Garand — to the AR platform. This approach keeps the action cleaner and runs reliably across a wide range of conditions and barrel lengths, particularly with suppressors and short barrels.
The MK series anchors the lineup, offering piston-driven rifles and pistols in 5.56, .223 Wylde, and other chamberings, alongside the long-stroke-piston AK-pattern and straight-pull rifles the company has developed. PWS also makes well-regarded muzzle devices and components. The emphasis throughout is on durability and reliable function under hard use.
For shooters who want a piston-driven AR built to run hard, Primary Weapons Systems is a respected specialist in the category.
How buying works on BallisticBid
Buy new firearms at the seller's ask, or place a bid and let the market set the price.
Browse pre-owned firearms listed by private sellers and collectors in the Community marketplace.
Every firearm transfers through a licensed FFL dealer of your choice for the background check and pickup.
Funds are held securely and only released once the transfer is complete.