A number of reasons. Research and development costs fall largely on the manufacturer, rather than on the taxpayers' dime, and the military doesn't have to maintain factories after production orders are complete.
they manufacture their own weapons
Yes in fact many other countries buy u.s weapons and equipment.
You are not allowed to buy weapons when you are in the British army. This is against the laid down rules and regulations. It is the military that assigns its soldiers the weapons.
One may not buy any form of chemical weapons through any legal channels. Only a government's military operations may possess chemical weapons legally.
for one you nor any civilian can buy any current military grade weapons you can buy close to military grade and they cost from $1200 and up
(in the US) You may personally own any weapons declared lawful and legal by the BATF. Although your military assignment may require you to be armed with, and use, all types of 'exotic' weapons, your status as 'active duty military' gives you no special privilege to personally own unlawful weapons of any type.
you get the weapons from quests or you buy them
all over you need to buy a top of the line metal detector to find it
China has sheer numbers. You decide. [China because the US relies on China economically and for their military, since the US uses the money China give them to buy military weapons, and they buy weapons from them.]
No. If CS tear gas is required for a mission, it is issued. Being in the military does not allow you to personally own any types of weapons which are not available to the general public.
buy alcohol an buy weapons
kill zombkes i think what he ment was buy weapons not get money