I have two of them I got in the past 2 weeks. One on a Colt 6920 with a 552 HWS on a YHM 7mm riser and one on my DDM4 300 Blk with an EXPS3-0. Used the included riser on both. I bought the non riser 552 out of ignorance and prefer my BUIS in the lower thired of the sight picture.
For my old eyes, they are great. I fooled around with mounting and prefer the "slap to the right" setup which Eotech says lefties prefer.They seem very well made to me. Time will tell.
Last edited by swinokur; 11-17-2012 at 04:17..