ATI MilSport SBR 300 Blackout 8.5" 7" M-LOK – Compact and Powerful Short-Barreled Rifle

The ATI MilSport SBR 300 Blackout 8.5" 7" M-LOK (Model ATIG15MS300SBR8, UPC 810113114965) is a compact, high-performance short-barreled rifle chambered in 300 Blackout. Designed for shooters who want maximum power in a highly maneuverable package, this SBR features an 8.5-inch barrel paired with a 7-inch M-LOK handguard, making it ideal for close-quarters use, home defense, and tactical applications. The MilSport SBR comes equipped with flip-up front and rear sights, an SR-1 stock, and ships with a 30-round magazine, offering a complete and ready-to-configure platform right out of the box.

Built on a reliable AR-15 platform, the ATI MilSport SBR delivers the ballistic advantages of the 300 Blackout cartridge in a short, lightweight configuration that excels in confined spaces while maintaining excellent terminal performance.

Key Features of the ATI MilSport SBR 300 Blackout

Why Choose the ATI MilSport SBR 300 Blackout?

The ATI MilSport SBR in 300 Blackout is an excellent choice for shooters seeking a compact, powerful, and highly maneuverable short-barreled rifle. The 8.5-inch barrel paired with the 300 Blackout cartridge provides impressive terminal ballistics and reliable cycling with both supersonic and subsonic ammunition. The 7-inch M-LOK handguard offers a modern, lightweight platform for mounting optics, lights, grips, and other accessories. ATI has designed this SBR with practicality in mind, including flip-up sights and the SR-1 stock for immediate usability. Whether used for home defense, tactical training, or as a compact truck gun, the MilSport SBR delivers strong performance in a small package. Its AR-15 compatibility also allows for easy customization and upgrades as needed. The combination of the powerful 300 Blackout caliber, short overall length, and quality components makes this SBR a strong performer for those who prioritize maneuverability without sacrificing stopping power.

Technical Specifications

The ATI MilSport SBR 300 Blackout 8.5" 7" M-LOK (Model ATIG15MS300SBR8, UPC 810113114965) is a compact and powerful short-barreled rifle built for shooters who need maximum performance in a small package. Chambered in 300 Blackout, this SBR features an 8.5-inch barrel that takes full advantage of the cartridge’s versatility with both supersonic and subsonic loads. The 7-inch M-LOK handguard provides a modern, lightweight platform for mounting accessories while keeping the overall length short and maneuverable. Equipped with flip-up front and rear sights and an SR-1 adjustable stock, this rifle is ready for immediate use or further customization. The included 30-round magazine gives users extended firepower right out of the box. Built on the reliable AR-15 platform, the ATI MilSport SBR offers excellent parts compatibility and upgrade potential. Whether used for home defense, tactical training, or as a compact personal defense weapon, this SBR delivers strong ballistic performance in a highly portable configuration. ATI has designed the MilSport SBR to meet the needs of shooters looking for a capable, feature-rich short-barreled rifle that balances power, size, and functionality in one well-equipped package.