|Repair for a fraction of the cost! Contains all the common rebuild parts for the Umarex Elite Force H&K MP7 Navy Gas Blowback airsoft rifle. Genuine factory replacement parts. Don't settle for anything less than T4E Umarex parts! This kit comes with everything you need to rebuild your SMG rifle! Includes: Nozzle Assembly, Body Pins, Hammer Assembly, Bucking, Springs and O-rings.