Silencer Co Piston M16x1 RH AC29 | .45 ACP | 17-4 SS

This Silencer Co piston (AC29) is a serviceable replacement piston designed for use with SilencerCo Osprey and Octane suppressors on .45 ACP host firearms. It is manufactured from 17-4 stainless steel and heat treated for durability. The piston provides the female-threaded interface between the suppressor’s Nielsen piston assembly and the host muzzle, using a right-hand M16x1 thread pattern.

Product Specifications

• The manufacturer part number is AC29.
• The piston material is 17-4 stainless steel, heat treated.
• The thread pattern is M16x1 RH.
• The intended caliber listed is .45 ACP.
• The finish is listed as Black.
• The product type is a Silencer piston.
• The piston fit is for Osprey and Octane series suppressors.
• The series designation is Piston 16M x 1RH.
• The piston features female threading that attaches to SilencerCo threaded barrels.
• The piston functions as part of the Nielsen device that enables semi-automatic cycling with compatible pistols.
• Compatible models include Omega K Series; Hybrid 46; Hybrid 46M (with Charlie piston mount); Osprey Series; Octane Series; Omega 36M (with Charlie piston mount).
• The product is categorized under Suppressor Accessories.
• The UPC is 817272010190.

Rugged and straightforward, this piston is intended for shooters who need a durable, serviceable interface for suppressed pistols. It is useful for range training and competition applications where a suppressor-compatible piston is required for reliable semi-automatic function, and for owners who maintain multiple host firearms and swap pistons for cross-compatibility. Built-in interchangeability makes it practical for operators who want a single suppressor to work across compatible hosts and subcaliber setups.