I use a Troy Industries Battlesight. It costs more than many, but it is very sturdy.
Wheelhouse #452, 10 Ring#5744, Mil Surp & MBR# 3006, ad nauseam
"By and large, the most successful riflemen were the over-mountain men of Tennessee." Richard B. LaCrosse, Jr., The Frontier Rifleman
"....the man with the rifle knows." USA AMU