Hi! i check the figther5347 video tutorial of how to add Custom Weapon in ShooterGame, but if i need to add new first person animation of weapon, how i can do it in blender or if i need to move the magazine of weapon?
So you want to add your own animations to the weapon + keep the ones from the arms? Or do you want to replace everything? 
Just the weapon (will post some pictures tomorrow):
- First of all you have to create all the needed animations in blender.
- export them and import all anims into the ue4
- after that you will have to create an animation bp in which you play and control all animations -> therefore this video series is a good start:
Add my own anims but keep originals, but i want do a new reload animation that move the weapon magazine down and up
How do I have to place the weapon on the fbx mesh in blender ?