In a class of its own, the Obsidian9 is nearly half its size in it’s short configuration, giving you two suppressors with one tax stamp. The Obsidian9 comes with a 1/2×28 Piston and the Obsidian45 comes with a. The Obsidian9 and Obsidian45 come standard with a Booster System (also known as a Nielsen Device) and Piston.
