I'm sure this has been covered but I can't find my answer. I'm looking for an inexpensive optic for a new ar build. 16" Carbine for target shooting at the range. I have owned a IOR scope on my bolt action and liked it. I'm interested in the edge and edge micro. Does anyone know if these are high enough to co witness? Are they manufactued in Europe or China? And what kind of glass is used, my last ior had good glass but it was 1300.00. If anyone has any experience please post or if you have close up pics. Thanks