The One Horse OH-15 is built around a gas-operated semi-automatic system and a 16-inch threaded barrel engineered for dependable cycling and consistent ballistic performance. Its 1:8 twist rate stabilizes a wide range of .300 Blackout projectiles, while the M-LOK handguard and black polymer furniture deliver a streamlined, durable, and ergonomic foundation for practical use. The receiver-mounted Picatinny rail provides a rigid optics interface, ensuring compatibility with modern sighting systems without additional adapters. In operation, the OH-15 supports both supersonic and subsonic .300 Blackout loads, making it an ideal host for suppressed shooting. The 5/8x24 threaded muzzle ships with an A2 flash hider, keeping the rifle suppressor-ready while reducing visible muzzle signature. The adjustable M4 stock and grip offer familiar AR-15 ergonomics, and the lightweight 7.14-pound build maintains excellent handling across hunting, home defense, and training roles. FEATURES Gas-Operated Action Provides reliable cycling with both supersonic and subsonic .300 Blackout loads. 16-Inch Threaded Barrel Supports suppressor use and enhances ballistic consistency. M-LOK Handguard Lightweight, rigid mounting platform for accessories and illumination tools. Picatinny Optics Rail Ensures secure and universal compatibility with modern optics. A2 Flash Hider Reduces muzzle signature while maintaining suppressor readiness. M4 6-Position Stock Adjustable length of pull for varied shooting positions and user fit. A2 Grip Familiar AR-15 ergonomics for consistent control and comfort. Lightweight Build At 7.14 pounds, maintains maneuverability across multiple applications. SPECIFICATIONS Manufacturer: One Horse LLC Model: OH-15 Caliber: .300 Blackout Capacity: 30+1 Barrel Length: 16 in Thread Pattern: 5/8x24 Grip: Black Stock: One Horse M4 6-Position Trigger: Not specified Sights: None Finish: Black Magazine Included: No NOTES Excellent host for suppressors due to .300 BLK chambering and 5/8x24 threads. M-LOK rail provides ample mounting space without adding unnecessary weight. Adjustable stock supports shooters of different sizes and shooting positions. Ideal for home defense, hunting, and suppressed range use. Balanced weight and familiar AR ergonomics make it approachable for new and experienced shooters alike. This item may have signs of previous use, such as minor dents or dings. We cannot guarantee that all original components are included. Please review the photos provided for a detailed view of the item's condition.