By now, most of you are probably aware of the custom Hi-Capa Gas Blowback Pistols from Airsoftjunkiez. These have the Tokyo Marui Hi-Capa 5.1 GBB Pistol as base and kitted with different upgrades to suit your taste. They have been customised to either use Green Gas or HPA and come with a 90 day warranty and parts guarantee. But if customers use of unapproved gas or pressured exceeding 130 PSI they will void warranty.

Here is a video showing two of these custom Hi-Capas.