Rock River Arms OP1500 LAR-15M 5.56 NATO 16″ 30+1
Specs at a glance
About this product
The Rock River Arms OP1500 LAR-15M Operator ETR is a 16-inch semi-automatic carbine built around a lightweight 13-inch M-LOK handguard and an extended charging handle for improved control. It is chambered for .223 Rem/5.56 NATO and ships optic-ready with a threaded barrel and A2 flash hider. The carbine includes an RRA 6-position NSP-2 stock, Hogue rubber beavertail grip, and a carrying case for transport and storage. Designed for range use, training, and general-purpose applications, the platform emphasizes familiar AR ergonomics and match-grade trigger performance.
Key Specifications
- The caliber is .223 REM/5.56 NATO.
- The barrel measures 16″.
- The rifle feeds from a 30 + 1 capacity magazine.
- The action is Semi-Auto.
- The overall length is 33″.
- The weight is approximately 6.40 lbs.
- The barrel is described as Threaded and fitted with an A2 Flash Hider.
- The trigger is a Two Stage Match unit.
- The stock is an RRA 6 Position NSP-2 in black.
- The twist rate is 1:9″.
This OP1500 LAR-15M blends practical ergonomics, match-oriented components, and modern accessory compatibility into a serviceable AR-style carbine. With its 16″ threaded barrel, optic-ready receiver, and quality RRA controls and furniture, it offers a dependable platform for range work, training, and duty-style applications where familiar handling and consistent performance matter.