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Gibbz Arms Ar-15/M16 G4 Side Charging Upper Receiver

Gibbz Arms Ar-15/M16 G4 Side Charging Upper Receiver

The Gibbz Arms G4 side charging upper receiver is a non-reciprocating upper receiver that uses most standard AR-15/M16 bolt carrier group. The only change needed is to replace the standard cam-pin with the included replacement enhanced cam-pin. The upper...

240.00