Primary Weapons Systems | PWS 13.5X1LH Piston | Black

The PWS 13.5X1LH piston from Primary Weapons Systems is a component intended for use with their long-stroke piston system. It permits mounting and proper function of PWS suppressors that use 13.5×1 LH threads. The design intention is to retain core AR-15 characteristics while reducing maintenance needs associated with direct impingement systems in high-round-count or adverse-condition use.

Common applications include integration into suppressed rifle setups for reduced gas/soot exposure to the action, and use in high-volume training or endurance shooting where lower maintenance intervals are beneficial.

Product Specifications

• The manufacturer is Primary Weapons Systems.
• The product name is PWS 13.5X1LH PISTON BLK.
• The product type is listed as Piston.
• The item falls under the subcategory Suppressor Accessories.
• The fit is specified as 13.5X1 LH.
• The color is Black.
• This piston allows the use of PWS suppressors on 13.5×1 LH threads.
• The design is intended for use with PWS long-stroke piston systems.
• The product UPC is 811154033772.

This piston provides a straightforward way to adapt a long-stroke piston rifle to accept PWS suppressors using 13.5×1 LH threads. It is a purpose-built accessory for shooters who prioritize lower maintenance intervals and reliable operation in sustained-use environments.