Ka Bar Military Fighting Utility Knife Duty Undershirt The plug is O ring sealed Pants The plug is O ring sealed for protection against the weather firefighting support roles UPC MPN SKU BRANCH PACKAGING BLADE EDGE 617717212512 1251 KA 1251 USA Box Plain 617717212505 1250 KA 1250 USMC Box Plain 617717412615 1261CP KA 1261CP USA Clam Serrated 617717412509 1250CP KA 1250CP USMC Clam Plain 617717412516 1251CP KA 1251CP USA Clam Plain 617717412523 1252CP KA 1252CP USMC Clam Serrated 617717212611 1261 KA 1261 USA Box Serrated 617717212529 1252 KA 1252 USMC Box Serrated the Short KA BAR version of the traditional KA BAR is made just as well as the original