The Rock River Arms OP1500 LAR-15M Operator ETR Carbine is a semi-automatic AR-style carbine chambered in .223 REM/5.56 NATO with a 16-inch barrel. It features a 13-inch lightweight M-LOK handguard, an optic-ready upper, and an extended charging handle for straightforward operation. The rifle ships with an RRA NSP-2 six-position carbine stock, Hogue rubber beavertail grip, and a carrying case. A two-stage match trigger and a 1:9 twist rate support consistent performance across common 5.56 loads.
Key Specifications
- Chambered in .223 REM/5.56 NATO.
- Action is Semi-Auto.
- The barrel measures 16-inch and is chrome lined.
- Handguard is a 13-inch lightweight M-Lok.
- Rifling twist rate is 1:9.
- Magazine capacity is 30 + 1.
- Trigger is a Two-Stage Match.
- Stock is a RRA 6 Position NSP-2 Carbine.
- Weight is approximately 6.40 lbs.
- Overall length is 33-inch.
Built for shooters who value dependable, no-nonsense performance, the OP1500 balances durability and practical features for range, competition, or duty use. Its chrome-lined barrel and M-LOK handguard support routine use and accessories, while the match trigger and consistent twist rate aid accuracy. The included components and carry case make it a practical, ready-to-use AR-style carbine for a variety of real-world roles.
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