How to unlock and access the Weapon Dealer in Schedule 1

As you grow your massive drug-selling empire in Schedule 1, you will inevitably need firearms to protect yourself from the law enforcement authorities and junkies. The best way to get weapons is by visiting the Weapon Dealer. 

The Weapon Dealer is hard to reach as he’s locked behind the challenging task of earning $10,000 by selling drugs. You can use your dealer to assist you in reaching the goal faster. After you complete it, you can start the Wretched Hive of Scum and Villany challenge before getting a call from Uncle Nelson leading you to the Warehouse.