The PWS 13.5X1LH Piston is designed for use with PWS suppressors, providing a reliable and efficient solution for your firearm. This piston features a 13.5X1 left-hand thread design, making it compatible with a variety of suppressors. Crafted from high-quality materials with an anodized black finish, it ensures durability in the field. The PWS piston system is built to reduce maintenance needs while maintaining performance, making it an excellent choice for high-volume shooting and adverse conditions. Trust in Primary Weapons Systems' expertise to enhance your shooting experience with this essential suppressor accessory.