G&P Signature Receiver for Marui/G&P M4/M16 AEG (Black)

G&P Signature Receiver for Marui/G&P M4/M16 AEG (Black) For Marui M4 / M16 Series & G&P F.R.S. Series Only Can Fit with G&P Taper Outer Barrel Innovative Style is Superbly detailed and extremely robust Metal Upper & Lower Receiver (Skeletal Look - All inessential parts has been remove to keep the lightweight) American Flag engraved on Upper Receiver Package Included: New Dust Cover Set, New Bolt Cover, Metal Hop-Up Set, Receiver Pin Set and Forward Assist Knob