I suggest that a firing range is added where you can test weapons that you don't have or the weapons you have so a person can experience the fire rate and/or get used to the iron sight and practice aiming with guns from unlocked sets. This could help players determine what gun to buy.
They seriously need to increase time for skill instructor its 4 hours make the cooling and the contributions we could use atleast not the timing they should decrease cuz 4 hours are way too much to wait but atleast let us use more contrbutions to get more skills at the same time