Primary Weapons Systems PWS .578X28 Piston | Black

The PWS .578X28 Piston is a machined replacement component produced from 17-4 stainless steel for extended service life. It is finished in black and engineered to be swapped to accommodate different host firearms or calibers where the piston interface is compatible. This piston is specifically designed to integrate with the Primary Weapons Systems BDE 9 pistol suppressor and functions as a service or configuration component for that suppressor family.

Common applications include scheduled suppressor maintenance and swapping pistons to adapt a suppressor to a different host or thread pattern while on the range or during training events.

Product Specifications

• The material is 17-4 stainless steel for corrosion resistance and durability.
• The fit/thread pattern is .578X28 as specified by the manufacturer.
• The finish/color is Black.
• The product type is a Piston for a suppressor mounting interface.
• The subcategory is listed as Suppressor Accessories.
• This piston is designed to integrate with the PWS BDE 9 pistol suppressor.
• The manufacturer is Primary Weapons Systems.
• The product name is PWS .578X28 PISTON BLK.
• The UPC is 811154033765.
• The component is intended for suppressor piston replacement and host adaptation.

This piston provides a durable, serviceable option for shooters who need reliable interchangeability for the PWS BDE 9 pistol suppressor platform. Its 17-4 stainless steel construction and straightforward fit make it well suited for routine maintenance cycles or when changing a suppressor’s interface to match a different host firearm. The component focuses on functional longevity and compatibility without altering the suppressor’s core design.