Rugged Obsidian Piston | M13.5×1 LH | 17-4 SS | OP004

The Rugged Suppressors Obsidian piston is a threaded accessory that employs a non-slotted, full-circumference gas seal to reduce gas blowback. It is machined from 17-4 Stainless Steel and heat treated, and carries a copper finish. The piston uses an M13.5×1 LH thread and is specified to fit the Obsidian 45 host.

Typical applications include use on suppressor-equipped Obsidian 45 hosts to lower felt blowback during range sessions and in situations where a robust, serviceable piston is preferred. When installing this piston on a fixed-barrel platform such as a carbine or subgun, the spring must be replaced with a Fixed Barrel Spacer.

Product Specifications

• The thread pattern is M13.5×1 LH tpi.
• The material is 17-4 Stainless Steel.
• The finish is Copper.
• The product is specified to fit Obsidian 45.
• The model is listed as Suppressor Piston.
• The hand orientation is Left Hand.
• The dimensions are 1.45 x 1.55 x 2.60.
• The height is 1.4500.
• The width is 1.5500.
• The length is 2.6000.
• The package width is 2.0.
• The package height is 3.0.
• The package length is 2.0.
• The weight is 0.1.
• The UPC is 859383006303.

Durable and precisely machined, this piston delivers a service-oriented solution for Obsidian 45 users who want lower gas blowback and corrosion-resistant construction. Its non-slotted seal and heat-treated 17-4 stainless body aim to provide consistent performance and long service life in regular range use.