SilencerCo Piston 5/8×24 | 30 Cal | Osprey/Octane

The SilencerCo piston with a 5/8×24 thread is a replacement piston designed for use with the Osprey and Octane suppressor families. It is manufactured from 17-4 stainless steel and heat-treated to increase durability. The piston functions as part of the Nielsen device to allow semi-automatic cycling on compatible host firearms and provides the female threads that attach to SilencerCo-threaded barrels. Common applications include use on 30-caliber host pistols and swapping pistons to enable multi-caliber suppressor setups.

Product Specifications

• The product type is listed as a Silencer Piston.
• The thread pattern is 5/8×24.
• The material is specified as 17-4 stainless steel.
• The finish is listed as Stainless.
• The piston is sized for 30 Cal according to product attributes.
• The listed fit is Osprey/Octane.
• The product series or model is Piston 5/8×24.
• The item is noted as compatible with Omega K, Hybrid 46, Hybrid 46M, Osprey Series, Octane Series, and Omega 36M.
• The description indicates the piston is heat-treated for maximum durability.
• The component functions as part of the Nielsen device to enable semi-automatic cycling.
• The listed length is 2.1 (value supplied by source).
• The listed width is 0.9 (value supplied by source).
• The listed height is 0.9 (value supplied by source).
• The listed weight is 0.1 (value supplied by source).
• The UPC for this item is 817272010206.

This piston is a straightforward replacement part for maintaining compatibility between SilencerCo threaded barrels and the Osprey/Octane suppressor families. Its 17-4 stainless construction and heat-treat process prioritize longevity under repeated use, and the interchangeable piston design supports multi-caliber flexibility and serviceability. For users who rotate host firearms or run subcaliber setups, the piston provides a simple means to adapt a suppressor to the host barrel’s thread and function.