The CTM AP7 can give the player a versatile airsoft shooting platform. You can convert your Action Army AAP-01 GBB pistol into an SMG/MP7-like primary for CQB games. From there, just take out the handgun from the kit if you want to use it as a backup/sidearm for other airsoft events. 6mm Badger takes a look at the kit if it is worth your money.