In my game you can change weapons mid battle I do this with a simple skill with a common event which changes what the player has equipped and replaces the weapon sprite shown on screen and also changes a variable so it shows how much ammo there is for the equipped weapon now here is my problem I would like to be able to use this skill without using up a turn so the player isn't attacked every time they change to different weapon thanks in advance.

I created a script that allows one to change weapons in battle, sloppy it may be compared to my later works. Still, it too uses a turn.

But you may wish to consider this; the time it takes to switch from one weapon to another may take 'longer' than the actual attack.

How long does it take to pull a trigger? How long does it take to change from a Glock 40 40mm handgun to a Mossberg 500 pump action shotgun? It would seem that the turn was well spent to change the player's gear.

Besides that, a player may take unfair advantage of the turn-free feature.

nah that should up the ante by letting the enemy characters do it too. you have to commit to your attacks with the intention of killing your enemy. not the best way to communicate desperation without physical input, but pretty neat idea.