Description
This Silencer Co piston is a direct-fit replacement for Osprey and Octane suppressors, providing the female threaded interface needed for 1/2×28 host barrels. It is machined from 17-4 stainless steel and heat treated to withstand repeated use while maintaining dimensional stability. The piston functions as part of the Nielsen device that allows semi-automatic cycling and supports multi-caliber use when paired with the appropriate components.
Key Specifications
- The piston is made from 17-4 stainless steel and is heat treated for durability.
- The thread pattern is 1/2×28 (female) for common 9mm host barrels.
- Designed to fit Osprey/Octane series suppressors.
- Listed caliber/size is 9mm.
- Includes the Nielsen device component that enables semi-automatic cycling.
- Compatible with models including Omega K Series, Hybrid 46, Hybrid 46M, Osprey Series, Octane Series, Omega 36M.
- The finish is listed as Stainless.
- Weight is listed as 0.1.
- Dimensions are listed as Length 2.1 x Height 1 x Width 1 (manufacturer-listed values).
Built for straightforward field serviceability and multi-caliber flexibility, this piston offers a durable threaded interface for compatible Silencer Co suppressors. Its 17-4 stainless construction and heat treatment make it a practical replacement part for shooters who need reliable, serviceable components in Osprey and Octane systems.





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