The Arms Dealer is one of the most important people in Terraria.He also sells items such as the Illegal Gun Parts, and the Minishark, which can be hard to come by.There is a way to gain this valuable NPC.
Step 1: Find bullets for a gun.
These can't be found in most of the world's chests.
Step 2: If you find a gun, keep it in your inventory.
Wait until the arms dealer shows up.
Step 3: It's easier to find a gun in this method than it is in another method.
Step 4: You can explore the corruption.
You have to go underground until you find a Shadow Orb.You can get the Arms Dealer if a Musket drops out.
Step 5: It is possible to explore the Crimson.
Every first Crimson Heart you destroy, there's a 100% chance that TheUndertaker will drop out.
Step 6: Skeletron can be defeated.
The Handgun can be found in the dungeon until you find it.The Handgun is harder to get than the two guns mentioned.
Step 7: The Phoenix blaster is for sale.
The Handgun and a few Hellstone bars can be combined to get the Phoenix blaster.
Step 8: There is a temple named the Lizard Temple.
20% of the time he'll drop the Stinger.
Step 9: The Arms Dealer will appear once you get one of the guns mentioned above.