The PWS Suppressor Piston is meticulously crafted from 17-4 stainless steel to guarantee extensive durability and prolonged service life. With .578x28 thread pitch this versatile piston can be effortlessly swapped out to accommodate various host firearms or calibers.PWS Suppressor Piston with .578x28 Thread Pitch17-4 stainless steel construction for maximum durabilityCompatible with PWS BDE 9 Rugged SilencerCo Lone Wolf Arms and Griffin Pistol SuppressorsBlack finishEasily swappable for different firearms and calibersSpecifically engineered to seamlessly integrate with multiple suppressor systems this piston ensures optimal performance and reliability providing shooters with unparalleled adaptability for their suppressor setup.