Mil-Spec must meet min standards for the part or product made, BUT the Military usally will take the LOW BIDDER. After 20 years fighting with supply officers to get what I wanted I learned alot. When you get an Item one year that dose not mean that you will get it next year. After buying 6 BA'S for the fire department and using them for two years, when I needed to replace one , that company no longer had the contract and no longer meet Mil-Spec. But I got the units I needed buy showing the base commander and the supply officer they were saving money and trainning time on new units.