The Rock River Arms LAR-15 R3 Competition is an AR-style semi-automatic rifle chambered in 5.56 NATO with an 18-inch barrel and a 30-round magazine. It is built for 3-gun competition use and ships with an Operator A2 stock. 
 

Key Specifications 

• Brand: Rock River Arms 
• Model: LAR-15 R3 Competition 
• Caliber: 5.56 NATO 
• Action: Semi Auto 
• Capacity: 30+1 
• Barrel Length: 18 in 
   

Detailed Features 

• 18-inch barrel suited for longer-range stages in competition 
• Operator A2 stock 
• 3-gun competition-oriented configuration 
• 30-round magazine included

Owners of the Rock River Arms LAR-15 R3 Competition tend to appreciate the 18-inch barrel for the velocity it adds on steel and paper at distance, which is a genuine advantage in 3-gun stages. Rock River Arms has a reputation for consistent barrel quality, and the R3 Competition benefits from that lineage.

The Operator A2 stock suits shooters who prefer a fixed cheek weld for consistent positioning, though those who prefer adjustable stocks often swap it early. Handling at competition weight is manageable, and the standard AR controls mean no retraining for anyone already familiar with the platform.

Value is generally considered good for a competition-ready rifle out of the box. The trigger is a common modification target for serious competitors, but casual 3-gun participants find the stock configuration functional. Some owners note that Rock River's customer service has been reliable when issues arise.