i have a gun model download and(import to unreal already) i want to let my character hold this gun, but how can you do that.
There is a lot of tutorials out there that tells you how to do that process. Try to research and look it up online before asking questions here.
I will still provide you with a link to the video about adding a gun to a character anyway.
Video - Adding The AK-47 Weapon - #8 Creating A First Person Shooter (FPS) With Unreal Engine 4 - YouTube