The PWS .578X28 PISTON BLK from Primary Weapons Systems is meticulously crafted from 17-4 stainless steel to deliver outstanding durability and longevity, ensuring reliable performance under demanding field conditions. Designed for versatility, these pistons can be effortlessly swapped to accommodate different host firearms or calibers, giving shooters unparalleled adaptability across configurations. Specifically engineered to seamlessly integrate with the PWS BDE 9 pistol suppressor, this piston enhances reliability and efficiency, helping maintain consistent gas management and reduced drag for a smoother shooting experience. In addition to its primary compatibility, the piston is compatible with a range of popular pistol suppressors, expanding opportunities for modular setups and on-the-fly adjustments at the range or in the field. Finished in a durable black finish, it combines rugged protection with a low-profile aesthetic. Whether upgrading an existing suppressor system or building a modular suppression solution, this PWS piston delivers precise threading at .578x28 and robust construction that stands up to repeated attachment and removal, making it a smart choice for hunters, competition shooters, and professionals seeking dependable suppressor accessory performance.