RC, yes it has windage, L&R, no "up and down".I knew that it wasn't necessary because of the variable front mount, but it would have been nice. Did you guys with m4 uppers have to put a rail to raise the dot or scope over the front sight. I was looking to get something from CDNN or one of the other websights to try, but didn't know if the height would clear the front site, or if I should order a riser just to be safe. Also any recomendations on the handgaurds, I would like to run a quad rail system so I can decide where I want to place my accesories, light, laser, maybe a front grip etc.This company must be fairly new TWSC, they claim that there are only 10 companys who use as many mil-spec parts as they do, It looks well made for the money,If anyone heard of them please let me know what you heard.They are local to FL.