Ok this is just coming from me I love m4 and pbp but if I was too choose I wouldnt buy the bar because tbh its been nerf and i can destroy people using bars with starters cause of freeze and yet shipka the freeze is bad too yet people with metal storm have a higher chance due to the fact it has better aim so it wont slide too far off even though sometimes thats good it isnt alwaus good. So just get metalstorm