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Rra Cmptl Rrage 3g Upr 5.56nato 16
Rock River ArmsMSRP: $540.00$447.56Rock 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... -
Rra Cmplt Car A4 Upr 458 Socom 16
Rock River ArmsMSRP: $790.00$656.01Rock River Arms complete Tactical Carbine upper is an A4 upper chambered in .458 SOCOM with a 16" chrome moly bull barrel and 1:14 twist. Additionally the upper comes with a complete bolt carrier... -
Rra Cmplt Car A4 Upr 350lgd 16" 10rd
Rock River ArmsMSRP: $740.00$613.10Rock River Arms A4 Carbine upper comes chambered in .350 Legend with a 16" chrome moly 1/16 twist barrel. Additionally this upper includes a RRA 13" M-Lok compatible lightweight free float rail and a... -
Rra Cmp Coyote Car A4 Upr 300blk 16
Rock River ArmsMSRP: $820.00$680.53Rock River Arms A4 Coyote Carbine upper comes chambered in .300 AAC / Blackout with a 16" chrome moly 1/8twist barrel. Additionally this upper includes a RRA 12.5" M-Lok compatible lightweight free...