Ya dude, make different sets of animations for each gun then use the right set when the gun is equipped. Typically you’ll attach the gun to one hand in past projects I’ve used the trigger hand as the attachment hand. Then the forward hand just works out. There’s fancier **** you can get into with runtime ik for aiming and fixing up anim compression but don’t worry about that at this point. Just make all the anims for each gun.
/ Kyle