The Rugged Piston 1/2×28 is the non-slotted piston from Rugged Suppressors for Obsidian pistol suppressors on barrels threaded 1/2×28 (brand part no. OP002). Rugged says the non-slotted design creates a full circumference gas seal, which drastically lowers gas blowback for a more enjoyable shooting experience. It is machined from 17-4 stainless steel and heat treated to last. It is the standard 1/2×28 piston, the thread Rugged includes with the Obsidian9.

Key Specifications

• Barrel thread is 1/2×28, the pitch this piston is cut for.
• The non-slotted design creates a full circumference gas seal, which Rugged says drastically lowers gas blowback.
• It is machined from 17-4 stainless steel and heat treated, so it is built to last.
• Pistons are generally used with a booster system on handguns, which is where this part does its work.
• On a fixed barrel carbine or subgun the spring must be replaced with a Fixed Barrel Spacer, so plan on that part for those hosts.
• The Obsidian9 and Obsidian45 pistons are cross compatible with SilencerCo slotted pistons, as Rugged states.

Frequently Asked Questions

Is this the 1/2×28 Internal Shoulder piston for the Sig P320 or Glock 43? No. Rugged lists the 1/2×28 Internal Shoulder piston, which it says is for the Sig P938, Sig P320 and Glock 43, as a separate option from this standard 1/2×28 piston.

Which suppressor ships with a 1/2×28 piston? Rugged includes a 1/2×28 piston with the Obsidian9, so this is the standard replacement for that thread.

Does it work with a Fixed Barrel Spacer on a carbine? Yes. On a fixed barrel platform such as a carbine or subgun, Rugged says the spring must be replaced with a Fixed Barrel Spacer when the piston is used.

Buy the Rugged Piston 1/2×28

A spare or replacement 1/2×28 piston keeps an Obsidian running on a threaded 9mm barrel the way Rugged built it. Order it from our Lubbock, Texas gun shop for fast, insured shipping, and browse more suppressor parts and accessories while you are here.