Little Turtle does a step-by-step installation of the CTM AP7-SUB replica SMG KIT for the Action Army AAP-01. This kit enables one to convert the Action Army AAP-01 Assassin Gas Blowback Pistol into MP7 GBB... "The AP7-SUB kit released by CTM this time, I personally really feel so good that you can get the price of the MP7 submachine gun without a lot of pain in terms of cost."