If any of you reading this have ever played Red Orchestra 2 before you'll know exactly what I'm talking about, what I'm suggesting is instead of your character bolting a gun e;g: a Mosin automatically you can have an option to press a button e;g left click to bolt it.
By doing this you allow for a space to melee them instead of being stuck in an animation.
Happy for any feedback or extra things anyone would like to add to this thanks.