How can I fix my "Bow's" model?

So, the issue with my bow (actually a musket but oh well) is that in order to get it to look remotely good in Third-person, the only method I know of is transforming the model (I use Blender for modelling btw), and because of this, when I go into First-person, it looks completely off. (facing 90* too far to the right), but if I rotate it back to make it look good in First-person, it is 90* too far to the left in Third-person.

Is there another way to rotate the model so that it works correctly, or something like that? This is really ruining it.