Nice and you have to learn it in any way creat an anim graph and change… for beginner i would use the funktion blend poses by int make a right click in a black space on this node and at the botom is written ad new pin add 100 pin ore how muich you need drag and drop 100 animations in the Anim grapf and creat an int Weapon type set everytime you hold and other werapon the Intiger in the anim bp and he switch to it