Answer:
an assassination sniper gun works by simply using an hammer to "bolt" a very large bullet to a target, which can easily kill someone in one shot. these snipers take a while to reload since most of the work of the sniper is more put into a one-hit kill meaning and accuracy than others. a sniper basically works like a normal gun expect its bullets fly much faster and farther and are much larger than normal guns bullets. an assult rifle works nearly the same way, expect that the rifle fires smaller bullets faster and without much reloading.