Rock River Arms, the leader in specialized Modern Sporting Rifles, has developed a 5.56mm semi-auto that advances the clean, trim look and performance of the monolithic-style upper receiver/handguard design. The RRAGE Carbine builds on Rock River Arms' new extruded flat top upper receiver. Matched to the receiver is a 6061T aluminum free-float handguard that blends almost seamlessly with the upper to provide an elegant, unitized profile and balanced strength and rigidity across the optics platform. The carbine length handguard boasts a full-length MS1913 top rail and features the popular M-LOK rail configuration for easy accessory adaptation.- CALIBER .223 REM/5.56MM NATO- MAGAZINE (1) magazine with 30rd capacity, RRA polymer Magazine- BARREL 16" Chrome Moly, 1:9 Twist, A2 Flash Hider- RECEIVERS Extruded Aluminum A4 with Port Door and No Forward Assist- HANDGUARD M-LOK Carbine Length Free Float- STOCK RRA Six-Position tactical Carbine Stock- FINISH Veil Tac-Black Camo- FINISH Veil Tac-Black Camo Finish