I like my eotech a lot I've got the eotech magnifier for it to and it's great. I prefer running it on my ar-15 instead of the ar-10 cause I've got a 4x16x40 Nikon M-308 scope for it and long range is a lot more fun with the 10 then the 15 I just built this AR-15 for long range with a 3.5 lb...