The Rugged Suppressors Obsidian Piston .578×28 is an Obsidian suppressor piston from Rugged Suppressors, built to .578×28 spec. Rugged Suppressors machines it (Rugged Suppressors part no. OP001) to factory tolerances rather than as a generic aftermarket stand-in. It is a Nielsen-style spring piston that lets a pistol-caliber suppressor’s mass float independently of the host’s slide. Without a piston, the extra weight of a suppressor hanging off the muzzle can rob a semi-auto pistol of the slide velocity it needs to cycle reliably, and this piston restores normal function. It is a practical pickup for anyone running a suppressor setup where the small parts matter as much as the can itself.

Key Specifications

• .578×28 thread pattern is the host barrel thread this piston’s booster body indexes onto.
• Genuine Rugged Suppressors part is sourced from Rugged Suppressors through an authorized distributor rather than an unbranded aftermarket copy.

Frequently Asked Questions

What host thread does this piston fit? It indexes onto a .578×28 threaded barrel; confirm your pistol’s thread spec matches before ordering.

Do I need a piston to run a suppressor on a pistol? On most semi-auto pistol hosts, yes; without a piston isolating the suppressor’s mass from the barrel, the added weight can slow the slide enough to short-stroke the action.

Buy the Rugged Suppressors Obsidian Piston .578×28

Order the Rugged Suppressors Obsidian Piston .578×28 directly from Schaefer Defense and get it moving toward your bench today. Ships fast from our Lubbock, Texas gun shop, direct to your door with no FFL required. Check out the rest of our gunsmithing tools lineup for the other small parts that keep a suppressor setup running right.