Some weapons have their own misaligned hands or forearms after each sequence completed.
Most of non-classic weapons have their view model animated on 'idle' but some only does one loop at a time.
Holding default reload button will freeze the view model animation on that last frame of the sequence. (e.g: after the 'draw' animation sequence finishes, it will stay on the last frame of that sequence. This include to any kind of sequence of that weapon)