Custom work on a G36 AEG is shown here by Evike.com in this "The Gun Corner" episode, the Angel Custom G36 Bottle Opener is kitted with a KeyMod Rail with its front end reminding of your a bottle opener... "The G36C by Umarex is a metal gearbox high performance Airsoft AEG rifle that is fully licensed by the world famous Heckler & Koch, creator of the real steel G36 series assault rifle.