If you installed DesnoGuns Mod and you do not have enough weapons? Then be sure to download Black Ops 3 Weapons Mod and you get even more different weapons. At your disposal are the rifles, pistols, machine guns and more. In total there are 22 types of weapons, each of which has unique characteristics. The only drawback is the lack of crafting recipes. So you have to use different mods in survival mode.
All ammo taken from DesnoGuns Mod. Some weapons have different capabilities. For example, the sniper rifle has a night vision device, you can easily use these weapons at night.
Black Ops 3 Weapons installation (link).