The Rock River Arms RRAGE 3G Complete Upper, 5.56x45mm NATO, 16-inch, Black, 15-inch M-LOK Handguard (brand part number BB0470) is a ready-to-run AR15 upper built for 3-gun and general-purpose duty. Rock River Arms chambers it in 5.56 NATO, safe for both 5.56 and .223 Remington ammunition, and tops a 16-inch chrome moly barrel with an A2 flash hider and a carbine-length gas system. The extruded A4 upper receiver pairs with a 15-inch RRAGE 3G M-LOK free-float handguard for a lightweight, accessory-ready package. It ships complete with a bolt carrier group and charging handle already installed, so it drops onto any mil-spec AR15 lower and is ready to run.

Key Specifications

• Chambered in 5.56x45mm NATO, safely running both 5.56 and .223 Remington ammunition.
• Barrel length measures 16 inches for a balanced carbine-length setup.
• Barrel is machined from chrome moly steel, finished in black.
• Twist rate of 1:8 inches stabilizes a wide range of 5.56/.223 bullet weights.
• Upper receiver is extruded A4 aluminum with a port door and no forward assist.
• Muzzle device is an A2 flash hider threaded 1/2×28.
• Gas system is carbine-length with a low-profile gas block.
• Handguard is RRA’s 15-inch RRAGE 3G M-LOK free-float design.
• Complete assembly weighs approximately 4.25 pounds.
• Ships complete with a bolt carrier group and charging handle installed.

Frequently Asked Questions

Does this upper include a bolt carrier group? Yes, it ships complete with a bolt carrier group and charging handle installed.

What lower does this fit? Any mil-spec AR15 lower receiver.

What is the gas system length? Carbine-length, with a low-profile gas block under the M-LOK handguard.

Buy the Rock River Arms RRAGE 3G Complete Upper, 5.56x45mm NATO, 16-inch, Black, 15-inch M-LOK Handguard

Drop a ready-to-run AR15 upper onto your lower and start shooting. Order it from our Lubbock, Texas gun shop, and our team will get it ready to ship as soon as it’s available.