So I’m a bit confused here so help me out. When you have an RMR with co witness sights, are you not just putting a piece of glass between the sights and projecting a red dot in the front sight post where a red dot usually already is? I’m failing to understand why this is better than just having blacked out rear irons with a big red dot as a front sight? via /r/CCW https://ift.tt/2GX8OSm
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