Far Cry 5 – How Do I Unlock The Third And Fourth Weapon Slots?
/To unlock the third weapon slot, you will simply need to buy the perk. It costs eight perk points.
For the fourth, you will need to have a confrontation with one of the Seeds – one of the cult leaders dotted around Montana. The first you will likely encounter once leaving the tutorial island is John Seed. He lords over Holland Valley, his catchphrase, ‘Yes,’ erected on a distant hillside like a messed-up Hollywood sign. You need to fill up John Seed’s progress bar to face off with him. Do this by completing missions, and side quests, freeing civilians, liberating compounds, blowing up cult property, and killing cult VIPs. Every third of the bar will trigger a story mission. Once you’re there, you will have a showdown with him. The perk to get the fourth weapon slot is unlocked after this fight.