Sig Sauer SRD Piston 45 ACP M16x1 LH 17-4 Stainless Steel Black

If you've got an SRD45 suppressor and need to match it to a different host pistol, the Sig Sauer SRD Piston 45 ACP M16x1 LH offers a straightforward conversion without buying a whole new can. This replacement piston swaps into your existing suppressor to accommodate barrels with M16x1 left-hand threads—common on certain 1911s and other .45 ACP pistols. It's a practical solution for shooters who run multiple hosts and want to keep one suppressor in the fight.

The piston itself is built from 17-4 stainless steel, a material that handles the heat and pressure of repeated shooting while resisting corrosion. The matte glass bead finish gives it a clean, professional appearance and helps it blend with quality suppressors. Swapping pistons is simple: remove the original from your SRD45, drop in the M16x1 LH, and you're ready to thread onto your compatible barrel. No tools or special knowledge needed—just match your barrel's thread pitch and you're good to go.

This is the kind of versatile accessory that makes sense if you're running a modern .45 ACP setup or building out a collection of hosts for a single suppressor. It keeps your investment flexible and your options open at the range or in the field.

Key Features

• M16x1 left-hand thread pitch for compatible .45 ACP barrels
• 17-4 heat-treated stainless steel construction
• Matte glass bead finish for durability and appearance
• Drop-in replacement—simply swap with original piston in SRD45 suppressor
• Enables single suppressor to work with multiple host platforms

Specifications

Frequently Asked Questions

What suppressor does this piston fit?

This piston is designed to convert your SRD45 suppressor to accommodate M16x1 left-hand threaded barrels. It replaces the original piston in the can.

What thread pitch does the M16x1 LH match?

This piston matches barrels with M16x1 (16 millimeter diameter, 1 millimeter pitch) left-hand threads—a common configuration on certain .45 ACP 1911 platforms and other hosts.

How do I install this piston?

Simply remove the original piston from your SRD45 suppressor and swap it with the M16x1 LH piston. No special tools are required. Once installed, thread the suppressor onto your compatible barrel as usual.

Can I use this piston on multiple host pistols?

Yes—once installed in your SRD45, you can thread the suppressor onto any .45 ACP pistol with an M16x1 left-hand threaded barrel. This makes one suppressor work across compatible hosts.