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Silencer Co AC31 Osprey/Octane Piston 9/16×24 .40 S&W

Original price was: $75.65.Current price is: $22.69.

UPC

817272010213

Manufacturer

Silencer Co

Manufacturer Part Number

AC31

Caliber/Gauge

.40 S&W

Length

2.1

Model

Piston

Package Height

1.0

Package Width

4.7

Product Type

Piston

Shipping Weight

0.09

Thread Pattern

9/16″-24 tpi

Description

Replacement piston for Silencer Co Osprey and Octane suppressor families, sized for .40 S&W hosts. It is manufactured from 17-4 stainless steel and heat-treated for durability and wear resistance. The piston provides the female-threaded interface that connects a suppressor to a threaded host barrel and is designed for straightforward interchange to accommodate different host firearms or subcaliber adapters. The unit uses a 9/16×24 thread pattern for compatible barrels.

Key Specifications

Made from 17-4 stainless steel and heat-treated for durability.

Finished in Stainless for corrosion resistance and consistent appearance.

Thread pattern of 9/16×24 to match compatible threaded barrels.

Caliber fit specified as .40 S&W.

Designed to fit Osprey/Octane suppressor models.

Classified as a Silencer piston replacement part.

Provides a female-threaded interface to Silencer Co threaded barrels.

Listed weight is 0.25.

Can be changed for different hosts or subcaliber setups: Piston 9/16×24.

Disassembly capability indicated as False per manufacturer attributes.

Durable, serviceable, and purpose-built, this piston lets you configure Osprey and Octane suppressors for the specific host and caliber you run. Its heat-treated 17-4 stainless construction and standard 9/16×24 threading make it a straightforward replacement or conversion component for shooters who require reliable mechanical interface and multi-host compatibility.

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