This modpack gives you many gun mods, and some QoL mods like JEI and Jade.
List of mods (that I can remember):
[TaCZ] Timeless and Classics Zero
Vic's Point Blank
Scorched Guns 2
Superb Warfare
and others, incuding TaCZ mods.
Overall, there are tons of vehicles like tanks and helicopters, as well as alot of guns, almost too many guns.
The Exceptional Warfare Team
