Here’s a smoking deal on a set of 45 degree offset backup iron sights for your AR-15. If you’re running a scope on your AR and need a set of BUIS these offset ones should do the trick. They feature 1/2 MOA elevation and windage adjustments, 7075 aluminum construction, an ambidextrous design and are the same height above the rifles bore as standard M4/AR15 iron sights.
The best part? They’re only $25!
Edit: It seems like the price fluctuates lower and higher than $25 on the Amazon listing every so often, be sure to view the “More Buying Choices” section for the lowest price.