#html-body [data-pb-style=ERKO2GK]{justify-content:center;display:flex;flex-direction:column;background-position:left top;background-size:cover;background-repeat:no-repeat;background-attachment:scroll}#html-body [data-pb-style=ERKO2GK],#html-body [data-pb-style=HEURT45]{border-style:none;border-width:1px;border-radius:0;margin:0;padding:0}Convert your MODX-9, MODX-45, SRD9, or SRD45 suppressor to a 13.5x1mm Left-Hand thread pitch with the SRD-PISTON-M135X1LH. The piston is made of 17-4 heat-treated stainless steel with a matte glass bead finish. The piston will fit a variety of hosts, and it is a perfect choice for converting your MODX-45 to 9mm. Simply swap the conversion piston with the original piston in your suppressor to match your barrel thread pattern.