So does anyone know how to do that? cause im working on a FPS and can’t figure out how to do that
In your objects hierarchy there are bones/joints. Rotate each joint till the appendage and body are in what appear to be correct positions and keyframe it. The best way I found to keyframe is to go from major pose to major pose and then go halfway between and adjust if need be. Continue till tweaked. For example use the Idle pose or whatever the rig will be at at the start of reload. Then move the hands and upper body to the loading position, then to the firing position, or what you foresee after the reload. Then drag the timeline indicator halfway between those keyframes. If the pose looks correct then fine. Keyframe it for stability. If not adjust till it looks correct. Then go halfway between all the keyframes and judge for correct anatomical positioning. When you have no errors when you scrub the timeline it is ready to go into Unity.
HTH
BTH