The Obsidian9 is optimized for 9mm for additional suppression while staying light and compact. Our ADAPT(TM) Module gives you 2 lengths in one suppressor, for maximum suppression or weight/length savings. With a diameter of 1.37a ^2 the Obsidian9 is compatible with pistol suppressor sights, making it perfect for pistols or sub-guns. Caliber Ratings Belt Fed Rated for Pistol Calibers up-to 9mm 300BLK Subsonic (with an 8a ^2 or longer barrel) 9A-39 Subsonic (with an 8a ^2 or longer barrel) 350 Legend (with a 16a ^2 or longer barrel or longer) ADAPT(TM) Modular Technology 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. With additional versatility in mind the Obsidian9 is fully compatible with suppressor sights for seamless use on a pistol or carbine. Keyed Baffles Obsidian9 baffles are machined from 17-4 Stainless Steel barstock, with three indexing tabs for proper alignment. With serviceability in mind the Obsidian baffles create a gas seal that virtually eliminates carbon build up between the baffles and tube. Non-slotted Piston The Obsidian9 and Obsidian45 use a non-slotted design creating a full circumference gas seal. This drastically lowers gas blowback for a more enjoyable shooting experience. The Obsidian9/45 pistons are cross compatible with SilencerCo(TM) slotted pistons. Revolutionary Mounting System The Obsidian9 mount is machined from 17-4 Stainless Steel barstock. We strategically place the engraving on the thickest cross section of the 17-4 stainless steel mount for fast and easy replacement should the suppressor become damaged beyond repair, it also serves to make the Obsidian9 infinitely upgradeable in the future. Parts Compatibility Already a proud owner of an Obsidian45(TM)? The Obsidian9 is fully compatible with Obsidian45 accessories. Pistons, Fixed Mounts, Fixed Barrel Spacers and 3 Lug Mounts all are interchangeable with the Obsidian 9! Belt Fed RatedA(R) The Obsidian9 is machined from top of the line materials to not only last a lifetime, but withstand any rate of fire. Because we believe your gear shouldn't be what's holding you back. Specifications Diameter: 1.37a ^2 Length: Standard Configuration: 7.8a ^2, Short Configuration: 4.85a ^2 Weight: Standard Configuration: 12.7oz; Short Configuration: 8.7oz Materials Baffles: 17-4 Stainless Steel Tube: Hard Coat Anodized Aluminum Mount: 17-4 Stainless Steel Finish: High Temp CerakoteA(R) (Black or FDE) Additional Features -Removable Front Caps -Pistons work as a Front Cap Tool Sound Levels PISTOL Full Configuration - 121.4 K Configuration - 135.5 CARBINE Full Configuration - 120.9 K Configuration - 128.5 Includes 1/2A-28 piston 9mm Front Cap Obsidian 9 Suppressor ADAPT Module Operator's Manual Obsidian Logo Sticker