The SilencerCo AC1346 Piston is designed for use with compatible SilencerCo Nielsen devices and threaded barrels. Its female-threaded design attaches to SilencerCo threaded barrels, helping provide a secure connection for compatible suppressor configurations. The piston is engineered to support semi-automatic cycling by allowing the Nielsen device to move as the pistol barrel unlocks during operation.
Constructed from heat-treated 17-4 stainless steel, the SilencerCo AC1346 is built for strength, durability, and repeated use. Its replaceable design allows users to change pistons when adapting a compatible host firearm or caliber, making it a practical component for setups that require a .578 x 28 XL thread pattern. Verify firearm, barrel, and suppressor compatibility before installation.
For fixed-barrel applications, pair the piston system with a compatible Fixed Barrel Spacer as recommended by SilencerCo. The AC1346 is intended for firearm-part applications and should be installed and used according to the manufacturer’s instructions and all applicable laws and safety requirements.
Features:
- Model: Piston
- Material: Heat-treated 17-4 stainless steel
- Thread Pattern: .578 x 28 XL
- Compatibility: SilencerCo threaded barrels and compatible Nielsen devices
- Function: Supports semi-automatic cycling for unlocking pistol barrels
- Application: Replaceable piston for compatible host firearms and calibers
- Fixed-Barrel Use: Pair with a compatible Fixed Barrel Spacer
- Type: Firearm part
