KCI products are widely recognized for their exceptional manufacturing quality in polymer products, with many law enforcement and sports shooter users widely utilizing their impressive high-capacity magazines. It was out of their dedication to quality that KCI's polymer high-capacity and drum magazines were born! KCI Mag has been manufacturing high-quality magazines for over 30 years. KCI's custom molded magazines are precision formed, then finished with a patented thermo-setting powder coating that prevents corrosion and wears. KCI magazine for Glock style pistols that carry up to 50 rounds, and the wide selection of models available include extra capacity magazines and drum mags for AKs and M4s.