The Sig Sauer Suppressor Piston (brand part number SRD-PISTON-578X28) is a .45 ACP piston threaded .578×28, built to match a Sig suppressor to a host barrel cut with that thread pattern. It measures 2.5 inches and is a simple, direct swap for the original piston already installed in the suppressor.

Key Specifications

• Built for .45 ACP suppressor hosts.
• Threaded .578×28 to match compatible host barrels.
• Measures 2.5 inches.
• Installs as a direct piston swap.

Frequently Asked Questions

What caliber is this piston for? .45 ACP.

What thread pattern does it match? .578×28.

Buy the Sig Sauer Suppressor Piston, .45 ACP, .578×28

Match your suppressor to a .578×28 host barrel with a simple piston swap. Order it from our Sig Sauer lineup, part of our gun parts and accessories selection, at our Lubbock, Texas gun shop for fast, direct shipping.