Sig Sauer SRDPISTON578X28 SRD Piston 45 ACP .578 x 28 17 4 Stainless Steel Black”

Convert your SRD45 suppressor to a .578X28 Right Hand thread pitch with the SRD-PISTON-578X28. The piston is made of 17-4 heat treated stainless steel with a matte glass bead finish and it will fit a variety of hosts. Simply swap the conversion piston with the original piston in your suppressor to match your barrel thread pattern.