
Availability: In Stock
The Sig Sauer SRD Piston in .578" x 28 thread pitch is a conversion component engineered to adapt your SRD45 suppressor to different host firearms. If you've already invested in an SRD45 suppressor but need it to work with a .578" x 28 threaded barrel—common on many 45 ACP platforms—this piston swap lets you do exactly that without replacing the entire can. It's a practical, cost-effective way to extend your suppressor's compatibility across multiple guns in your safe.
Built from 17-4 heat-treated stainless steel, this piston is engineered for durability and reliability under the pressures of centerfire shooting. The matte glass bead finish resists corrosion and gives it a professional, no-nonsense appearance. Installation is straightforward: remove your current piston from the SRD45 and swap in the .578" x 28 version. No gunsmithing, no special tools—just a simple parts swap that takes minutes.
Whether you're running a Sig Sauer 1911, a custom 45 ACP build, or another firearm with a .578" x 28 threaded muzzle, this piston opens up your suppressor to a wider roster of shooting platforms. It's the kind of accessory that pays dividends if you shoot multiple calibers or hosts and want your suppressors to work as hard as you do.
| Thread Pitch | .578" x 28 |
| Material | 17-4 Heat-Treated Stainless Steel |
| Finish | Matte Glass Bead |
| Suppressor Compatibility | Sig Sauer SRD45 |
| Orientation | Right Hand |
Yes. The SRD Piston .578" x 28 is designed as a direct replacement component for the SRD45 suppressor. Simply remove the original piston and install this one in its place.
The .578" x 28 thread pitch is common on many 45 ACP platforms, including certain Sig Sauer 1911 models and other 45 ACP firearms. Check your barrel's thread pattern before ordering to confirm compatibility.
Installation is a simple piston swap. The original piston is removed and replaced with this one. No permanent modifications to your suppressor are required, and the process can be completed with basic handling.
This piston is made from 17-4 heat-treated stainless steel with a matte glass bead finish, offering durability and corrosion resistance for reliable long-term use.

SKU: 115657439 • Width: 4in • Height: 1.2in • Depth: 6.8in • Weight: 0.09oz



Availability: In Stock
The Sig Sauer SRD Piston in .578" x 28 thread pitch is a conversion component engineered to adapt your SRD45 suppressor to different host firearms. If you've already invested in an SRD45 suppressor but need it to work with a .578" x 28 threaded barrel—common on many 45 ACP platforms—this piston swap lets you do exactly that without replacing the entire can. It's a practical, cost-effective way to extend your suppressor's compatibility across multiple guns in your safe.
Built from 17-4 heat-treated stainless steel, this piston is engineered for durability and reliability under the pressures of centerfire shooting. The matte glass bead finish resists corrosion and gives it a professional, no-nonsense appearance. Installation is straightforward: remove your current piston from the SRD45 and swap in the .578" x 28 version. No gunsmithing, no special tools—just a simple parts swap that takes minutes.
Whether you're running a Sig Sauer 1911, a custom 45 ACP build, or another firearm with a .578" x 28 threaded muzzle, this piston opens up your suppressor to a wider roster of shooting platforms. It's the kind of accessory that pays dividends if you shoot multiple calibers or hosts and want your suppressors to work as hard as you do.
| Thread Pitch | .578" x 28 |
| Material | 17-4 Heat-Treated Stainless Steel |
| Finish | Matte Glass Bead |
| Suppressor Compatibility | Sig Sauer SRD45 |
| Orientation | Right Hand |
Yes. The SRD Piston .578" x 28 is designed as a direct replacement component for the SRD45 suppressor. Simply remove the original piston and install this one in its place.
The .578" x 28 thread pitch is common on many 45 ACP platforms, including certain Sig Sauer 1911 models and other 45 ACP firearms. Check your barrel's thread pattern before ordering to confirm compatibility.
Installation is a simple piston swap. The original piston is removed and replaced with this one. No permanent modifications to your suppressor are required, and the process can be completed with basic handling.
This piston is made from 17-4 heat-treated stainless steel with a matte glass bead finish, offering durability and corrosion resistance for reliable long-term use.
SKU: 115657439 • Width: 4in • Height: 1.2in • Depth: 6.8in • Weight: 0.09oz
