don't use rings; get a cantilever mount -- less hassle, correct height and proper eye relief. there's a good comparison here
, but it boils down to the PEPR being the best option in the around-$100 range, as the others said.
ETA: it's supposed to be at the same height as your irons; that's the right height. the front sight will blur out as you zoom in; if that bugs you, get offset irons, a QD mount or both.
“Keep it up, America, keep telling your youth that mud and danger are fit only for intellectual pigs. Keep on saying that only the stupid are fit to sacrifice, that America must be defended by the low-brow and enjoyed by the high-brow. Keep vaunting head over heart, and soon the head will arrive at the complete folly of any kind of fight and meekly surrender the treasure to the first bandit with enough heart to demand it.” (Robert Leckie)
Last edited by strongpoint; 02-07-2013 at 6:46 PM..