The SilencerCo AC1756 Piston is a 1/2x28 SN 9mm suppressor piston for compatible SilencerCo pistol suppressor systems. The SN piston is intended for short-thread pistol barrels that require this specific piston style rather than a standard 1/2x28 piston.

SilencerCo pistons are designed to be easily changed for different host firearms, calibers, and barrel thread patterns. They are made from 17-4 stainless steel and heat treated for durability. The piston is part of the Nielsen device/booster system that allows many semi-automatic tilting-barrel pistols to cycle properly with a suppressor attached.

1/2x28 SN Piston: The AC1756 is the 1/2x28 SN version. SilencerCo specifically notes that the Glock 43 requires the 1/2x28 SN piston because of the shorter threads on the Glock 43 threaded barrel.

For Compatible SilencerCo Suppressor Systems: SilencerCo pistons are commonly used with compatible pistol suppressor families such as Osprey, Octane, Omega K, Hybrid, and other manufacturer-approved configurations. Always confirm compatibility with your exact suppressor model before ordering.

Tilting-Barrel Handgun Use: Pistons and boosters are generally used on semi-automatic tilting-barrel pistols. For fixed-barrel hosts, use the correct fixed-barrel spacer, fixed mount, or manufacturer-recommended configuration for your suppressor and firearm setup.

Important Fitment Note: This AC1756 model is the 1/2x28 SN piston. Always confirm barrel thread pitch, SN piston requirement, suppressor compatibility, host firearm action type, bore alignment, and manufacturer instructions before installation or live fire.

Related Gear: Browse more SilencerCo products, shop additional silencer pistons and boosters, or pair your compatible host with 9mm Ammo.