This is a model of the main rifle used by the Union Army during the civil war, was a good test, cause there is enough pictures to make an accurate model, but no blueprints at all. Moreover I wanted to model all of the pieces, screws, and internal details of the rifle. I still have the intention to do an animation to show how to assemble it.

I made an animation of the lock plate with the trigger mechanism activated. Here is the link to youtube