Gear & Accessories Handguns Dueck Defense’s Red Dot Back Up (RBU) Chris Mudgett February 15th, 2018 | More From Chris Mudgett Share0 Tweet Email Share on Facebook.Share on Twitter.Share on Google+A red dot mounting solution that dovetails and replaces your pistol’s rear sight. Dovetail plates that allow a user to mount a miniature red dot sight to a pistol’s slide have been around for a while. Traditionally, these plates have been a flat adapter for a particular optic, but they were inherently difficult to use due to the lack of an iron-sight reference to help locate the dot during presentations and nonstatic shooting. Barry Dueck, former U.S. Marine-turned-competitive shooter is also the head of SureFire’s Suppressor Division. He created an advanced mounting plate called the Red Dot Back Up (RBU). What’s unique about the RBU is that it integrates fixed iron sights into the base plate that replaces the rear sight. There are specific RBUs available for most Glock and Smith & Wesson M&P pistols. Different models are available including a multiple-fit version that hosts most available mini red dot sights. Each sight adapter secures the red dot via screws and bosses. A sight pusher (or hammer and punch) are all that’s needed to install an RBU. Dueck Defense provides an Allen wrench for a set screw. The RBU goes on like any aftermarket rear sight, while a set screw offers additional security. Simply center the RBU in the dovetail, mount and then zero both the iron sight and optic. The iron sight will be visible in the center of the optic’s lens (or in the lower third) as a reference or as a backup in case of optic failure. My preferred RBU is for use with a Leupold DeltaPoint Pro, due to the DeltaPoint’s optionally integrated and adjustable rear sight. The RBU integrates robust iron sights into the sight base. In mid-September, I observed two new female shooters during a class at the SIG Sauer Academy. The first half was spent working on fundamentals using iron sights. The second half was with a pistol-mounted red dot. Their improvement not only surprised me, but also the instructor who said, “Their shooting is simply incredible.” We observed the two shoot a walk-back drill from 5 to 25 yards, keeping all but a handful of rounds in the center 8-inch circle of the target. Those outside the circle were within a couple of inches. If you’re undecided about modifying your pistol, the RBU is a fine way to test the water. Share on Facebook.Share on Twitter.Share on Google+ Share0 Tweet Email Load Comments ( ) Don’t forget to sign up! Get the Top Stories from Guns & Ammo Delivered to Your Inbox Every Week To sign-up for our newsletter, check this box and submit your email address below. If you sign-up, then you acknowledge that your email address is valid, and that you have read and accept our Terms of Service Even More gear-accessories Show More Get the Guns & Ammo Newsletter FREE! Get the top stories delivered right to your inbox every week. To sign-up for our newsletter, check this box and submit your email address below. If you sign-up, then you acknowledge that your email address is valid, and that you have read and accept our Terms of Service 9 Awesomely Creative Ways to Kill ZombiesRead Now! Advertisement ▶ Now on Tablets! Subscribe & Save! Temporary Price Reduction! Subscribe Now Give a Gift | Subscriber Services LIKE WHAT YOU'RE READING? Get 12 issues for the low price of just $9! Subscribe!