A quick presentation by CTM on their Hi-Capa HPA M4 Adapter for those who need more capacity for their Hi-Capa pistols. With this adapter, you can use High-Pressure Air (HPA) and M4 AEG magazines on your Hicapa airsoft pistols. You will also need an M4 AEG magazine, a paintball air tank with a low-pressure regulator (0-140 psi), and a HPA line with Foster quick disconnect. CTM recommend using a high quality M4 AEG magazine with strong springs and not leaving the magazine fully loaded with BBs for prolonged durations.