This is a BCM MCMR 10" MLOK rail. The rail was installed once, removed once and the weapon it was on was never actually handled with the rail on it. For whatever reason the laser engraving is sightly darker on one side (see picture). If this bothers you don't buy it or ask BCM to swap it out.
$135 shipped
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http://sixty-six.org/x_drive/MCMR10.jpg
Manufacturer's link: https://www.bravocompanyusa.com/BCM-...10-556-blk.htm
