Sig Sauer SRD Piston 9mm M13.5x1 LH Stainless Steel

Sig Sauer Replacement Pistons for Sig SRD Suppressors are a made of 17-4 heat treated stainless steel with a matte bead finish. The piston will fit a variety of hosts, and is a perfect choice for converting your SRD45 to 9mm. Simply swap the conversion piston with the original piston in your silencer to match your barrel thread pattern. Available in 1/2"-28 or M13.5X1 LH.