Hi-Capa teching done cheap by Sigma Extreme. He covers essential internal parts like the buffer, springs, piston head, and hammer pad. Also discussed are the necessary tools, including hex keys and sandpaper for fitting. This includes a detailed breakdown of disassembling the Hi-Capa, upgrading the cylinder, and adjusting the slide. He also explains how to properly install the recoil spring and buffer and provides tips for maintaining the slide and other components.