Silencer Co | AC29 Osprey/Octane Piston | M16x1 RH | .45 ACP

The Silencer Co AC29 piston is a serviceable, user-replaceable piston designed for the Osprey and Octane suppressor families. It uses a 16×1 RH female thread and is specified for use with .45 ACP host firearms. Manufactured from 17-4 stainless steel and heat treated for durability, the piston forms the threaded interface of the Nielsen device and permits semi-automatic cycling on compatible pistols. Common applications include range training and action pistol competition where caliber or host swaps require a different piston.

Product Specifications

• The product type is Silencer Piston.
• The thread pattern is M16x1 RH.
• The piston is specified for .45 ACP caliber hosts.
• Compatible with Osprey and Octane series suppressors.
• Constructed from 17-4 stainless steel and heat treated for durability.
• The finish is Black.
• The piston functions as part of the Nielsen device to enable semi-automatic cycling.
• The mounting interface is a female thread to attach to SilencerCo threaded barrels.
• The series designation is Piston 16M x 1RH.
• The NFA thread pattern is listed as 16x1mm RH.
• An additional feature is Thread for HK Mark23 SOCOM.
• An additional feature is M16x1RH Piston for Osprey/Octa.
• Can be disassembled: False.
• UPC: 817272010190.

This piston provides a durable threaded interface for owners of Silencer Co Osprey and Octane suppressors who need reliable host compatibility or caliber conversion options. Its heat-treated 17-4 stainless construction and OEM thread form deliver the fit and durability expected for regular range and competition use.