Red Dot for Handgun on the Not-so-Cheap: Dueck Defense RBU

Red dot sights are a significant step forward for handguns, but until the recent Glock MOS or S&W C.O.R.E. series, it has been an expensive proposition to get a handgun ready. Up to make the expense less for those with an existing handgun is Dueck Defense with their RBU or “Red Dot Back Up”.

While the mount may be inexpensive compared to sending off a handgun to a smith, getting it milled and re-coated, the RBU clocks in $129. Price aside it does include already built-in iron sights and is can mount to an existing weapon without modification. Sadly, its only compatible with Trijicon RMR-pattern sights.

Capture2 Pr

Nonetheless, its a solid way to step into red dots on handguns without having to leap in head-first or to quickly remove sights without performing permanent modification.

• CNC Machined in the USA from US Mill certified bar stock
• Nitride coated giving a super hard matte black surface finish that is highly corrosion resistant even in salt water environments
• Uses factory rear sight dovetail. No modification to your gun
• Optimal mounting height to clear Suppressors
• Compatible with most open top and red dot tactical holsters

Nathan S

One of TFB’s resident Jarheads, Nathan now works within the firearms industry. A consecutive Marine rifle and pistol expert, he enjoys local 3-gun, NFA, gunsmithing, MSR’s, & high-speed gear. Nathan has traveled to over 30 countries working with US DoD & foreign MoDs.

The above post is my opinion and does not reflect the views of any company or organization.


  • Nicholas Chen

    How’s the accuracy? The irons do not appear to be adjustable.

    • Beju

      Depending upon your particular pistol, hit-or-miss.

      Thank you, I’ll be here all week.

      • PK

        Boy, that was a groaner for sure.

  • Joe

    Hopefully one could remove the Dueck mounts front sight, and install a Suppressor height front sight on the actual slide, THAT would get my attention.

  • Blake

    I guess they’re called “backup” iron sights because the sight radius on that thing is equivalent to that of a snubby pocket revolver…

  • Phidippus

    We can all speculate about what crappy backup sights the mount comes with, or we could actually go to the product page and see that they’re intended to prevent a lost dot.

    The sights are for indexing.

  • tony

    Made in USA does not have to price it out of the market.
    Just saying…

  • RICH

    ……….. and what is the ‘total cost’ ? ?

    • Don

      You must have missed this part, “RBU clocks in $129.”

  • Martin Frank

    Dude at sight mount has been making dovetail mounts with a rail top that you could mount a damn scope on if you wanted too.