Gaosen Kinetics talk aboout the Guarder Lightweight Hi-Capa Frame which he recommends to those doing upgrades with a small budget... "This is a full and highly detailed overview and breakdown of the new Guarder lightweight aluminum hi-capa frame for hi-capa airsoft pistols.

This frame closely replicates the Tokyo Marui stock hi-capa frame, in 5.1, 4.3, and Gold Match variations, in both black and silver, and is an interesting option for people who are looking for a budget lightweight build or a ground-up build without a base hi-capa."