Another episode of Airsoft GI Uncut's Arsenal Series where their GIs show off their airsoft guns that own. For this episode it's Zach's HK53 that gets featured... "Zach's HK53 assembled from parts kits and various pieces he could assemble over time. This started out as a full stock CA53 and a few other bells and whistles were added or changed to make the gun what it is today."