Description
Rock River Arms RRAGE 3G A4 carbine upper comes chambered in 5.56mm NATO. This extruded aluminum upper receiver comes with a port door and no forward assist. Additionally” this upper is equipped with a RRA 15″ RRAGE 3G M-Lok compatible handguard” a 16″ chrome moly barrel” A2 flash hider” bolt carrier group and charging handle assembly.
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