Of course that's exactly what these are for
and also do you think these will work in a first person shooter game?
of course. Just stick the camera into the characters head lolTons of tutorials on how to do that
i meant because the fingers aren't rigged as you said so do you think it could work because first person shooters need a lot of finger movement
you need to look at the style of game you want to create befor adding animations and other things, by having g low poly hands but cool reload animations i think would still be a very good hit.