eotech xps for mini g

Hey,anybody on here use the newer eotech sight,the one with the battery mounted transverse? I had thought about using one of these on my mini-g.I was thinking about using one of the rails to mount it own,either the amega or the ultimak.Is one of these better than the other?I remember on the other website something about the rails not fitting right or something on the mini g.Could somebody refresh my memory about this?I think this would work great for pig hunting at night with a flashlight any reason yall can think of for it not working? Thanks