The SilencerCo Piston M14.5 x 1LH is a replacement piston designed to adapt SilencerCo pistol-hosted suppressors to different host firearms and calibers. Machined from 17-4 stainless steel and heat-treated for increased durability, the piston forms part of the Nielsen device that enables reliable semi-automatic cycling when used with compatible barrels and mounts. It uses a 14.5mm x 1 LH thread pattern and is specified for use with .40 S&W handguns. The piston features female threading intended to attach to SilencerCo threaded barrels and supports a range of SilencerCo suppressor models with the appropriate mounts and spacers.
Key Specifications
- The thread pattern is M14.5×1 LH.
- Intended for .40 S&W caliber handguns.
- Constructed from 17-4 stainless steel and heat-treated for durability.
- The product type is Piston.
- The finish is Stainless Steel.
- The series designation is Piston 14.5M x 1LH.
- Compatible with Omega K Series, Hybrid 46, Hybrid 46M (with Charlie piston mount), Osprey Series, Octane Series, and Omega 36M (with Charlie piston mount) when used with appropriate mounts.
- The piston uses female threading to attach to SilencerCo threaded barrels.
- The listed weight is 0.1.
Engineered for straightforward interchangeability and long service life, this SilencerCo piston provides the threaded interface required to adapt compatible suppressors to .40 S&W semi-automatic pistols. Its durable stainless construction and factory thread pattern make it a practical component for maintenance or caliber/host changes when using supported SilencerCo suppressor systems.









