SilencerCo Piston 1/2×36 — Osprey/Octane, 9mm

This SilencerCo piston is a serviceable replacement component designed for the Osprey and Octane families. It forms the female-threaded end of the Nielsen device, enabling semi-automatic cycling on compatible host firearms and supporting subcaliber configurations. The piston is manufactured from 17-4 stainless steel and heat-treated for durability. It accepts a Fixed Barrel Spacer for fixed-barrel setups where required.

Key Specifications

• The piston is made from 17-4 stainless steel and is heat-treated for durability.
• It uses a 1/2×36 female thread pattern for attachment.
• Compatible fit with the Osprey/Octane suppressor family.
• Listed caliber compatibility: 9mm.
• The component is part of the Nielsen device enabling semi-automatic cycling.
• Threads are also recorded as .5×36 in product specifications.
• Weight is approximately 0.1 lb.
• Can be paired with a Fixed Barrel Spacer for fixed-barrel applications.
• Designed for interchangeable piston compatibility across relevant host firearms and subcalibers.
• Includes female threading to attach to SilencerCo threaded barrels: 1/2×36.

Built for durability and straightforward serviceability, this piston provides a practical way to adapt SilencerCo Osprey and Octane suppressors to different host firearms and subcalibers. Its 17-4 stainless construction and heat treatment give it the resilience expected in regular use, while the standard 1/2×36 female thread makes it easy to swap pistons as mission or caliber requirements change. For users who value reliable, modular components, this piston is a concise, functional solution.