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Nice sight, does not work with MBUS Gen 2
Written on Sep 02, 2025
Review for
XS Sight Systems AR Mil-Spec CSAT Rear Sight
Nice sight, but unfortunately does not work with the MBUS Gen 2. It sort of fits, but facing one way is a bit loose, and if you reverse it, it doesn't sit vertically. Will definitely be using this for my (eventual) retro AR-10 build instead. It is Mil-Spec after all, so trying it on an MBUS wasn't guaranteed to work.
The notch is a bit wide if you have your rear sight as far back as possible and aim nose-to-charging-handle-style, but it isn't unworkable. Could just be me, though.
The notch is a bit wide if you have your rear sight as far back as possible and aim nose-to-charging-handle-style, but it isn't unworkable. Could just be me, though.
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