PISTOL: AMERICAN TACTICAL - ATI MODEL OMNI HYBRID PISTOL, SERIAL NUMBER NS168460, SEMI - AUTOMATIC, 300 BLACKOUT, BLACK (MATTE), CASE NOT INCLUDED, 8.5" Notes: The American Tactical Inc. (ATI) Omni Hybrid Pistol in .300 AAC Blackout (.300 BLK) is an AR-pattern semi-automatic firearm built around ATI's hybrid polymer-and-metal receiver design. It combines a lightweight polymer-based receiver with an aluminum upper and is generally configured with a compact pistol-length platform. Exact specifications can vary by production run and configuration, so the markings and documentation on the individual firearm should be used for final identification. Manufacturer: American Tactical Inc. (ATI) Model: Omni Hybrid Pistol Caliber: .300 AAC Blackout (.300 BLK) Type: AR-pattern semi-automatic pistol Operating system: Gas-operated, configuration dependent Receiver: Hybrid polymer lower with metal reinforcement; aluminum upper Barrel: Length varies by specific configuration Magazine: Detachable AR-pattern magazine Capacity: Varies by magazine and applicable jurisdiction Sights: Configuration dependent; many versions use a flat-top upper for aftermarket sights or optics Handguard: Configuration dependent, commonly a lightweight free-float or modular handguard Muzzle: Configuration dependent Stock/Brace: Pistol configurations vary and should be identified from the individual firearm Accessory interface: Typically includes rail space for compatible accessories Finish: Commonly black Notable feature: The Omni Hybrid series is distinguished by its lightweight hybrid receiver construction. Identification note: Exact barrel length, furniture, sights, muzzle device, and magazine capacity should be verified from the specific ATI Omni Hybrid .300 BLK configuration.