Guns, bullets, and ammo

[Genenku]

I need to know how to do something. I want to make a map the uses guns. Now I want the player to have to press a button and click to fire the weapon. I then want a type of bullet to come out at certain speeds depending on the weapon. Now I also want the enemy to only take damage if they are actually hit by this bullet. Along with that I need an ammo system that can be adjusted so different weapons can cause different amounts of damage and have different ranges. I also would like an ammo system that is different for each weapon. Now I am requesting someone do this for me and send it to me, I will of course give them MEGA props in my map. OR, just tell me, in detail, how to do this, or at least some of it. PLEASE help!

 

[Mechanical Man]

Well, I made a map in this style. It should be somewhere on this site.