Latest video from Airsoft Taiwan is about the a mag cap made by a new company called Precision Custom for the Tokyo Marui Hi-Capa 4.5 or the KJ Works KP-05. Mainly used for Airsoft Practical Shooting, the Mag Cap protects the magazine when it's released as a shooter inserts a fresh magazine. It is a more compact mag cap allowing the handgun to be fit in a box specified for practical shooting.