I would like the gun stores to have more general stuff in them to improve the usage of the gun stores as well as create a more fun and better RP experience for everybody. As of now I believe that the amount of usage a gun store have is kind of low considering how strict the gun license is. That's why I think that adding more usage to the gun stores could be a good idea for everybody.
Melee weapons that could add a new and good RP experience if added:
Crowbar
Flashlight
Hatchet
Knuckle Dusters
Machete
Pipe wrench
Pool cue
Stone Hatchet
Switchblade
All of the melee ''weapons'' that I stated above all would make for some interesting new RP. Like the pipe wrench, would be perfect for a lot of the mechanical RP or the pool cue, could be a great thing to have at parts to RPily play billiard or the Knuckle Duster, could bring some interesting new RP as well.
Other things that could also make for some great new RP:
Parachute
Bulletproof vest
Stun Gun
All of this could also make for some great new RP.
I also think that you should have the option to only buy bullets and not have to buy a hole new weapon just to buy new bullets. Should also have the option to choose how many bullets you would like to have with the new gun that your buying.