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 SRD9 to 9mm to a left handed 13.5x1 metric threat 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
