Tag Archives: rbs

FAB Defense FBS / RBS Backup Sights

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Backup sights are a controversial issue these days. There are an increasing number of shooters who feel that the current crop of military-grade reflex and prism sights (Aimpoints, Trijicon ACOGs, etc.) are tough enough and reliable enough that backup sights are no longer useful – that is to say, any event that’s traumatic enough to destroy an ACOG is probably not going to leave behind an intact rifle.

To my knowledge, most militaries still embrace backup sights as an essential. About the only first-rate military I’ve ever seen field optics without backup iron sights is the IDF – you can find plenty of pictures online of optics deployed on flat-top M16s without a rear backup sight..

Therefore, I assume FAB Defense developed the FBS / RBS backup sights for export. I have a 9mm AR-15 that needed some backup sights, and the FBS / RBS seemed like an interesting option. How did I like it? More after the break.

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