rasheed ?'s

I picked up a Rasheed today at Sarcos and have no experience what so ever with this gun. I do have a Hakim and have shot it a few times and it is quite the shooting experience. The Rasheed doesn't have that nasty slaming bolt assembly as does the Hakim. I am wondering if the Rasheed eats brass in the same fashion as the Hakim and also what impact the bayonet has on accuracy. There is also a ring on the end of the barrel that I can't figure out what it is there for. Do any of you folks have anything you may wish to share about this rifle and how it shoots? Many thanks-SDH