Rock River Arms LAR-15M 17HMR1325 18" 11-Round Threaded Barrel Rifle

The Rock River Arms LAR-15M 17 HMR rifle is a purpose-built rimfire platform engineered for precision shooting, small-game hunting, and tactical training where centerfire performance is unnecessary. Built on the proven AR-platform architecture, this rifle delivers the reliability and ergonomics operators expect while chambering the ballistically efficient .17 HMR cartridge. The 18-inch threaded barrel enables suppressor compatibility, making this rifle ideal for noise-reduced training scenarios or hunting applications where hearing protection matters.

The LAR-15M features Rock River Arms' modular design philosophy with an 11-round magazine capacity and a threaded barrel at 1/2x28 pitch for standard .17 HMR suppressor mounting. The 40-inch overall length and 15.92-pound weight provide excellent balance for shooting from supported positions while remaining maneuverable in confined spaces. The AR-pattern controls and trigger geometry ensure shooters experienced with modern tactical rifles face minimal transition, maintaining muscle memory and weapon-handling consistency across platforms.

Law enforcement and military personnel use the LAR-15M for ammunition-efficient marksmanship training, CQB skill-builders, and low-recoil precision work where cost per round justifies the dedicated platform. Tactical shooters and rimfire competitors benefit from the suppressor-ready threaded barrel and reliable magazine feed system. The rifle integrates with standard AR-accessory ecosystems—rail systems, optic mounts, and furniture—enabling customization without specialized adapters. Optimal performance is achieved with quality .17 HMR ammunition; compatibility with standard AR-15 ergonomic controls reduces operator training overhead.