You have multiple weapons, lol. It comes across as you've nailed your mechanics and are migrating to content. It's not a lack of polish that's my issue, but that's on me for not being specific.
Fundamentally my contention is with reloading being an aiming movement that pulls the camera to an odd rotation, any aiming seems to move the camera off the normal rotation axes you'd expect from any normal FPS game which feels WEIRD and unpleasant. Also, if PvP is something you're focused on which it sounds like you are, please add a sensitivity option somewhere. It also feels as though I can't look down far enough to load the revolver.
If you want to add control difficulty, please don't do so by making your camera feel gross to manipulate, consider key based interaction as you'd see in games such as Receiver.