This silencer piston is made by Sig Sauer and is constructed out of heat-treated stainless steel. The addition of this piston allows the user to convert their .40 S&W/10mm subsonic SRD45 suppressor to a left handed 14.5x1mm thread pitch. Installation is quick and easy, just replace the original piston with this conversion in your suppressor to match your barrel’s thread pattern.

Disclaimer: All NFA rules apply