I got a vortex strikefire red/green dot holosight for my AR. The rifle has the non removable carry handle so I got a tapco rail/adapter for the handle and the low mount ring for the sight as recommended by the manufacturer, but I can not get the sight adjusted to put the dot anywhere near point of aim with the irons. Way too high and to the right. I think it may be the rail adapter but not sure. Any body have any ideas?