Modify mixamo animation in unty

Hello, i have made one character using makehuman + generated fbx + generate different animations with mixamo ( dying, walking with gun, shooting… etc…)

Then i would like to add a weapon ( gun taken form turbosquid). I have the gun imported in unity at seems ok…

But if i put the character in scene as you can watch in above image, i can “see” left hand, left arm all the rig ( i have imported as humanoid rig and animations work very well).

But in the fbx imported that you can see in the project hierachy, i cant modify the fbx, cant add a component or at least i dont know how…Ther

Ideally would be to change one avatar adding the pistol ex: left hand, and that all were modified, in different animations including in all the pistol in left hand…There are only two “fixed parts” the mesh and the hips

upload_2019-1-1_13-40-19.png

I attach an image of one animation just to clarify ( i d like to include the weapon between the hands)

upload_2019-1-1_13-35-53.png

So i have other animations, pistol walk, pistol run, shooting, draft shooting…

Summarizing a workflow or help on how to add an element in this case gun, to this animations…

Sorry for my bad english…

Thanks

Happy new year…

Can you please include an image of the animation being viewed in the animation window? You can do that by opening the animation window (Window → Animation) and selecting the animation itself. As far as i know you can not edit animations that are imported with a model.