Rock River Arms OP1500 LAR-15M | 5.56×45 NATO | 16″ Barrel

The Rock River Arms OP1500 LAR-15M Operator ETR Carbine is a semi-automatic AR-style rifle chambered in .223 REM/5.56 NATO with a 16″ chrome-lined barrel and an optic-ready receiver. It ships with an RRA 6-position NSP-2 carbine stock, a Hogue rubber beavertail grip, an extended charging handle, and a carrying case. The carbine features a lightweight 13″ M-LOK handguard for modular accessory placement. For a versatile close-to-medium-range optic under $1,000, consider the Vortex Strike Eagle 1-6×24 as a direct-fit option for this platform.

Common applications include precision-oriented range training and AR-platform competition or tactical-style matches.

Product Specifications

• The manufacturer is Rock River Arms.
• The model is the OP1500 LAR-15M Operator ETR Carbine.
• The caliber is listed as .223 REM/5.56 NATO.
• The action is Semi-Auto.
• The barrel measures 16″ and is chrome lined.
• The handguard is a 13″ lightweight M-LOK design.
• The twist rate is 1:9.
• The trigger is a Two-Stage Match.
• The stock is an RRA 6-position NSP-2 carbine.
• The grip is a Hogue rubber beavertail grip.
• The capacity is 30 + 1.
• The muzzle device is an A2 flash hider.
• The sights are optic ready.
• The weight is approximately 6.40 lbs.
• The UPC is 842834125876.

Built with familiar AR ergonomics and a focus on modularity, the OP1500 LAR-15M Operator ETR is a straightforward platform for shooters who want a reliable, configurable carbine that accepts a wide range of aftermarket upgrades. The chrome-lined barrel and optic-ready upper simplify long-term use and customization, while the included stock, grip, and case make it convenient to transport and configure for match or range sessions.