CALIBER: Full Auto Rated for Pistol Calibers up-to 45ACP. 300BLK Subsonic. – DIAMETER: 1.37 – LENGTH: Standard Configuration: 8.6 Short Configuration: 6.7 – WEIGHT: Standard Configuration: 12.8oz; Short Configuration: 10.7oz – FINISH: Hard Coat Anodized then Cerokoted – SOUND LEVELS: – 45ACP-Full Configuration: 129.3dB – 45ACP-K Configuration: 137.6dB – 45ACP-K Configuration (wet): 131.5dB – 9mm-Full Configuration: 123.7dB – 9mm-K Configuration: 130.4dB – 9mm-K Configuration (wet): 125.9dB – MATERIALS: – Baffles: 17-4PH Stainless Steel – Tube: Aluminum – Mount: 17-4 PH Stainless Steel – ADAPT Modular Technology: – ADAPT Modular Technology allows the Obsidian 45 to be configured in a standard 8.6 or short 6.7 configuration within seconds. – Silence Comes Standard: – Whether you prefer the standard or short configuration the Obsidian 45 will performs above your expectations. Standard Configuration: 129.3dB-45ACP; 123.7dB-9MM Short Configuration: 137.5dB-45ACP; 130.4dB-9MM – Revolutionary Mounting System: – 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 Obsidian infinitely upgradable in the future. – Non-Slotted Piston Design – A common problem with pistol caliber suppressors is the gas blowback associated with slotted pistons. The Obsidian 45’s non-slotted piston system solves this issue by creating a full circumference gas seal. – Material Selection at its Finest: – Constructed of aluminum and 17-4 PH Stainless Steel the Obsidian is completely user serviceable and rated up-to subsonic 300BLK and full auto rated for pistol calibers up-to 45ACP.