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6 Best BUIS (Back-Up Iron Sights): A Complete Buying Guide

If there’s one thing you need to know, having a set of backup iron sights (BUIS) will NEVER let you down.

It’ll never leave you hanging, unlike battery-operated optics.

I’ve covered some of the best back-up iron sights in the market to help you find your next set of back-up iron sights.

Best Value

Bobro Lowrider AR-15 BUI Sight

Best Overall

Magpul MBUS Pro Steel Set

Best Budget Pick

Daniel Defense A1.5 Fixed Front and Rear Sight

Contents

6 Best Back-Up Iron Sights for the Money: Cheap, Budget, & High-Quality Picks

With different backup iron sights out there, finding the best backup iron sight is like finding a needle in a haystack.

Fortunately, I’ve done most of the legwork for you. Let’s get started!

BEST OVERALL