VFC MP7 HPA MP5 Magazine AdapterFully assembled and ready to use! Unlike the Tapp VFC MP7 magazine adapter, this one will actually stay in your MP7, wont randomly fall out, and actually fully cycle without increasing the pressure extremely high*. Like the other Black Variable adapters, the Sidecar Adapter design makes the adapter like an enhanced Redi Mag. This can use either green gas or HPA, depending on your preference. Safe design with NO 3D printed gas pressure chambers (unlike