Kolpin Gun Boot IV - Most popular Gun Boot for the past 10 years. Polyethylene shell provides heavy-duty protection. Designed to fit both left and right handed firearms. Room for a 50mm scope and rifles with slings. Removable and replaceable Impact liner for shock absorption and protection. Fits all Kolpin Mounting brackets. Airline approved Polyethylene shell provides heavy-duty protectionDesigned to fit both left and right handed firearmsRoom for a 50mm scope and rifles with slingsRemovable and replaceable Impact liner for shock absorption and protectionFits all Kolpin Mount