ROCK RIVER ARMS LAR-15 The Rock River Arms LAR-15 is an AR-platform rifle from Rock River Arms, a manufacturer well known for producing quality modern sporting rifles. Built around the familiar AR-15 design, the LAR-15 series has been offered in a variety of configurations, making the exact specifications dependent on the individual rifle. Key Details Manufacturer: Rock River Arms Model: LAR-15 Type: AR-Style Semi-Automatic Rifle Platform: AR-15 pattern Caliber: Varies by configuration-commonly .223 Remington/5.56 NATO Features: Configurations may include adjustable stocks, optics-ready flat-top receivers, and different barrel lengths or handguards The LAR-15 is known for its solid construction and the versatility of the AR platform