Silencer Co Piston 1/2×28 XL (Osprey/Octane) 9mm

Description

The Silencer Co Piston 1/2×28 XL is an extended-length, replaceable piston designed for use with Silencer Co Osprey and Octane suppressor families. Manufactured from 17-4 stainless steel and heat-treated, the piston forms the female-threaded interface that attaches a suppressor to a threaded host barrel. The piston is a component of the Nielson device that moves to allow semi-automatic cycling on many pistol platforms; the XL length provides additional spacing where the suppressor requires it.

Key Specifications

• Thread pattern is 1/2″-28 tpi (XL).
• Compatible models: Osprey/Octane.
• Listed caliber is 9mm.
• Material is 17-4 stainless steel and the part is heat-treated.
• The piston is part of the Nielson device used for semi-automatic cycling.
• Design provides extended (XL) length for additional spacing between host barrel and suppressor.
• NFA thread pattern is listed as 1/2×28.
• Fit is specified as Osprey/Octane.
• Weight is listed as 0.105.
• Finish is stainless.

Purpose-built for straightforward maintenance and multi-host flexibility, this extended piston lets owners adapt Osprey and Octane silencers to compatible 9mm hosts that require additional spacing. Durable materials and a heat-treated construction emphasize long service life and consistent interface with factory-threaded barrels, making it a practical replacement or compatibility option for users who need the XL configuration.