G&G M4 CQB-R - Black Version 1.2 G&G M4/M16 Series- • Metal Upper Receiver • New Black Nylon Fiber Lower Receiver The G&G M4 line of Electric Rifles have the highest standards for their non-metal parts. Same as on a real M4, the hand guards, grip, and stock are not typically made of metal, but rather a fiberglass/nylon composite. G&G has adapted this same principle in making these portions with some of the same materials. G&G has the most solid and visually appeasing fiberglass/nylon parts in the air soft industry. These guns come stock with a textured metal upper receiver, metal bushings and a customized black gearbox for the Canadian market. Typical velocity ranges between 340-360 feet per second. Battery, charger, safety glasses, and a sample pack of BB’s come standard with the package.