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Midwest Industries MK2 RMR Cap
$69.95 $64.95 Save $5.00
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Almost perfect

by YankeeBluejeans, Verified Owner from MN, United States Written on January 18, 2026
Yep, quite pricey for what it is but if you have a MK2 scope mount and want to piggyback a RMR/507C red dot, this is your only choice.
Great quality part.
It does come with removable steel bosses/studs and this I don't understand. First, they sit pretty loose in the mount and the optic. Since the optic is fixed in place by the screws, perhaps this isn't a problem but I like tight fitting parts especially ones designed to index an aiming device. This is my only concern.
Would recommend: Yes
Was it helpful to you? Yes | No