Honestly at the moment these are not anything accurate, rather they are just intended to be used as relatively low-poly props. Also not to any particular scale, so they need to be resized relative to your characters. It'll be up to you to make them work. Thus have fun with these and have at it!
I'm also trying to make sure the models in this set have somewhat usable UVs. But no textures at this point. It'll be up to you to create textures to add detail and decals.
I may also be willing to add a couple more instruments and extend the set seen in this file, so feel free to put in some requests on the comment. Again nothing too fancy, just try to keep it simple.
And I may as well mention I'm available for freelance work if you have any other projects in mind. Feel free to send a message in that regard.