Rock River Arms BB0470 RRAGE 3G Upper | 5.56 | 16in

The Rock River Arms RRAGE 3G complete upper (Mfr. part number BB0470) is built for AR-15 platforms and ships ready to install on a compatible lower. It is chambered for 5.56 NATO and specified to accept .223-caliber cartridges where appropriate, and it includes a bolt carrier group and charging handle. The assembly pairs a 16-inch chrome moly barrel with a 15-inch RRA RRAGE 3G M-LOK handguard for a balance of controllability and modular accessory mounting. Typical uses include precision-oriented range work and general AR-platform training.

Product Specifications

• The model is RRAGE 3G by Rock River Arms with part number BB0470.
• The upper is chambered in 5.56mm NATO and specified for use with .223 Rem where appropriate.
• The barrel measures 16-inch chrome moly for balanced handling.
• The barrel material is specified as steel (chrome moly).
• The muzzle device is a A2 flash hider with 1/2-28 threads.
• The gas system is a car-length system with a low-profile gas block.
• The handguard is a 15-inch RRA RRAGE 3G M-LOK unit in black finish.
• The upper receiver is an extruded A4 aluminum design with port door and no forward assist.
• Included with the upper are a bolt carrier group and a charging handle assembly.
• The listed weight for the complete upper is 4.25 pounds.
• The rate of twist is 1:8.
• The finish is specified as anodized black.
• The product is intended to fit AR-15 platforms.
• The product type is a complete upper receiver.
• UPC: 842834123865.

This complete upper combines service-style components with a modern M-LOK handguard to simplify building or upgrading an AR-15. Its configuration supports accurate range work and flexible accessory placement, making it a practical choice for shooters assembling a performance-minded platform.