Although the original manufacturer supplies this information when conventional ammunition is initially procured, further transfers or the effects of conflict or post-conflict armed forces restructuring often mean that the information is subsequently lost.
虽然在最初采购常规弹药时，原制造商提供了相关资料，但进一步转移弹药以及冲突造成的影响或冲突后的武装部队改革往往造成资料随后遗失。