The SilencerCo Piston M14.5 x 1 LH .40 S&W is a purpose-built suppressor accessory engineered to interface seamlessly with SilencerCo pistol silencers. Machined from durable 17-4 stainless steel and heat-treated for longevity, this piston threads directly into compatible SilencerCo suppressors to provide reliable function with .40 S&W hosts using an M14.5 x 1 left-hand barrel thread.

This piston forms part of the Nielsen device, allowing semi-automatic pistols to cycle properly when a suppressor is installed. Ideal for shooters who run multiple threaded barrels, it lets you quickly swap between hosts while maintaining consistent alignment and performance. Whether you are focused on range practice, training, or refining your suppressed setup, this piston offers a straightforward way to tailor your SilencerCo system to a specific .40 S&W barrel thread pattern, backed by SilencerCo’s reputation for thoughtful design and dependable suppressor accessories.

Key Features:

• Manufacturer: SilencerCo
• Model: Piston M14.5 x 1 LH .40 S&W
• Caliber: .40 S&W
• Product Type: Silencer Accessory Piston
• Thread Pattern: M14.5 x 1 LH
• Material: 17-4 Stainless Steel