<p style="text-align: center;"><strong>SIG SAUER SUPPRESSOR PISTON M16X1 45ACP FOR SRD SUPPRESSOR</strong><br /><br /><span>Convert your SRD45 suppressor to a 16x1 Left Hand thread pitch with the SRD-PISTON-M16X1LH. 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.</span></p>