In world at war it was fairly simple to edit weapon names, damage, ammo count etc..I can't seem to figure out how to do it in black ops 3. Any help would be appreciated

BO3 uses a table system to store its weapons which makes it a lot less simple to edit them.

One way I heard worked was editing "Call of Duty Black Ops III\share\raw\gamedata\weapons\zm\zm_levelcommon_weapons.csv" but I haven't tried it so no guarantee.