SilencerCo Piston M14.5 x 1LH | .40 S&W

This SilencerCo piston is a host-interface component machined from 17-4 stainless steel and heat-treated for durability. It uses a left-hand M14.5×1 thread pattern and is specified for use with .40 S&W hosts. The piston is intended to be swapped to match different host firearms or suppressor configurations and pairs with SilencerCo threaded barrels and related piston mounts.

Typical applications include suppressed range training and precision competition shooting where compatible pistons allow semi-automatic function with a suppressor-mounted interface.

Product Specifications

• The product type is Piston.
• The thread pattern is M14.5×1 LH tpi.
• The compatible caliber is .40 S&W.
• The piston is manufactured from 17-4 stainless steel.
• The finish is listed as Stainless Steel.
• The series designation is Piston 14.5M x 1LH.
• The NFA thread pattern is listed as 14.5x1mm LH.
• Compatibility is listed as Omega K Series, Hybrid 46, Hybrid 46M (with Charlie Piston Mount), Osprey Series, Octane Series, and Omega 36M (with Charlie Piston Mount).
• The listed weight is 0.1.
• Can be disassembled: False.
• Drilled and tapped: False.
• Additional feature: Piston for Osprey/Octane.
• Additional feature: Thread for M&P, Sig, HK, Walther.
• The UPC is 817272010176.

Durable and serviceable, this piston provides a direct-thread interface option for compatible SilencerCo suppressor lines. Its heat-treated 17-4 stainless construction and standard M14.5×1 LH threading make it a practical interchange part for gunsmiths and advanced users assembling or maintaining suppressed systems. Keep this piston in a parts kit when switching between host platforms or converting threaded barrels.