Umarex Heckler & Koch G36C Black AEG 6mm Airsoft Rifle. The HK G36C Competition Series Airsoft Rifle offers both full and semi automatic firing as well as AEG. A high torque motor and high-quality polymer fiber body contribute to an overall solid performing Airsoft gun. The high capacity magazine allows for 400 rounds to go in at once. The full metal gears and metal gearbox are powered by an 8.4V NiMH rechargeable battery and charger (included). Shoots 6mm Plastic Airsoft BBs at up to 350 fps. High-quality polymer fiber body. High Capacity 400 Round Magazine. Umarex Heckler & Koch G36C Black AEG 6mm Airsoft Rifle Specifications. Caliber: 6 mm BB. Barrel Length: 10.63 inches (270 mm). Maximum Length: 28.5 inches (724 mm). Weight: 4.95 lbs. Magazine Capacity: 400 rounds. Umarex H&K G36C AEG Airsoft Rifle. If the wrong contact details are provided any losses incurred as a result will be the buyers responsibility.