SilencerCo Osprey/Octane Piston M16x1 RH .45 ACP

SilencerCo’s AC29 piston provides a serviceable piston option for the Osprey and Octane series of suppressors. It is made from 17-4 stainless steel and heat-treated for increased durability, then finished in black. The piston contains the female threads that attach to SilencerCo threaded barrels and functions as part of the Nielsen device to enable semi-automatic cycling.

Key Specifications

• This item is a Silencer Piston intended for use with compatible SilencerCo suppressors.
• Designed for the Osprey/Octane model family.
• Sized for .45 ACP applications as listed.
• Features a M16x1 (16mm x 1 RH) thread pattern.
• Constructed from heat-treated 17-4 stainless steel.
• Finished in Black for corrosion resistance and appearance.
• Functions as the piston in the Nielsen device, allowing semi-automatic cycling when installed.
• Compatible with Omega K Series, Hybrid 46, Hybrid 46M (with Charlie Piston Mount), Osprey Series, Octane Series, and Omega 36M (with Charlie Piston Mount).
• Part of the Piston 16M x 1RH series.
• The listed weight is 0.1.

The AC29 piston is a practical replacement part for owners who need to adapt a suppressor to different host firearms or subcalibers. Its serviceable design and durable 17-4 stainless construction make it suitable for routine maintenance and caliber conversion tasks while maintaining the mechanical function required for reliable semi‑automatic cycling.