I have a CASV-M on one of my builds and am very happy with it. Installation was a breeze and I love the ability to customize rail position (normal railed systems are like cheese graters on my hand). The only issue I have is that there is no ability to co-witness the BUIS thru an Eotech
I have the flip up sight for the CASV-M but don't use it as I have a front sight post. I prefer the sight post for its durability over a fold up. I'll probably end up selling the front sight in Marketplace shortly.
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