Seizmik’s Pistol & Magazine Holsters Add-On Kit for the ICOS 2 AR allows up to 2 handguns and 2 extra magazines to be carried alongside the ICOS 2 AR’s hunting/long firearms. The injection molded pistol holster is designed to fit most compact semi-automatic pistols, full size semi-automatic pistols, and revolvers. Ergonomically designed pockets allow the handgun to be quickly accessed and securely gripped regardless of which holster or hand is used.