I have a new GG&G front flip up sight for dovetail gas blocks. I will throw in a 4 railed gas block (bull barrel) and a sightlink .070" fiber optic front sight post. I'm also selling a surefire M73 carbine length railed hand guard. It is new, minus the rubber ladder styled rail guards and no box. Asking $100 for the sight and $160 for the forend. Preferably check or MO. Can provide images for interested buyers.