



Description:

Dueck Defense designed the RBU as a simple no gunsmithing sight base to eliminate lost dots when aiming. Just align the fixed iron sights and your red dot is visible. The RBU is CNC Machined and then nitride coated. It uses factory sight dovetail and requires no modifications to your pistol and is perfect height to clear suppressors. The RBU integrates the RMR to an iron sight platform which provides OEM-like retention and result. The RBU is CNC Machined and then nitride coated. It uses factory sight dovetail and requires no modifications to your pistol and is perfect height to clear suppressors. The RBU integrates the RMR to an iron sight platform which provides OEM-like retention and result.

















Reason for purchase :

. It retails for $129.95 which is on part with any milling service you can purchase from most trusted shops. That does not include and possible cerakote which may be thrown in with the milling. I contacted Dueck Defense in hopes of getting one of their RBU mounts because while I did want to run an RMR on one of my Glocks, I did not want to go through the journey of getting a slide milled for it, again. Luckily, they were nice enough to send me one of their RBU's for such purpose. I received this RBU on 10/15 and since then have had it on three different Glocks in various configurations and carry methods. The RBU accepts any Trijicon RMR . It retails for $129.95 which is on part with any milling service you can purchase from most trusted shops. That does not include suppressor height sights and possible cerakote which may be thrown in with the milling.









First Opinion:

Out of the box the RBU appears to be very sturdy and obvious precision machined. It comes with two specific screws for the RMR, not supposed to use the provided screws which the RMR comes with when installing into the RBU.









The RBU comes with two set screws as well. Once the RBU is pushed in place and zeroed properly, the set screws can be secured in place with loctite and then an RMR may be installed.









The front sight front is serrated against the plain back rear sight post, which has serrations under the rear sight arms.









3.25MOA LED RMR at 25 yards. Once I did that I ran a cold 100 drill, usually in the area of 10 rounds 10 seconds, as speed and accuracy are both illusive standards but that is where something like an RMR'd Glock shine. The above target showed I had to bump the RMR a bit, which I did. I zeroed the RBU sights at 7 yards and then proceeded to zero the RM06 3.25MOA LED RMR at 25 yards. Once I did that I ran a cold 100 drill, usually in the area of 10 rounds 10 seconds, as speed and accuracy are both illusive standards but that is where something like an RMR'd Glock shine. The above target showed I had to bump the RMR a bit, which I did.









In the Field:

I was fortunate in that I got to employ the RBU in a variety of various training platforms. Every time I went to the range, which was fairly frequent for the 2016 year, I brought it out and ran a few drills with it. One several occasions I had access to varying distance targets, 5-7 to 20-50 to 100-150 yards, all at the same time. The RBU worked really well with this and allowed me to properly apply accuracy at speed as I needed to.









The RBU really did do what it was supposed to do. I put in the area of 2500 rounds through my G19L before I removed this particular RBU and moved it to my V1.0 #voodoospecial . On which I shot a few hundred rounds and was very impressed with the RBU's overall ability to maintain zero both for the RBU as well as the RMR.









Ownership and Usage:

I conceal carried the RBU on the G19L for a short bit as I generally carry a standard G19 EDC. I did so just to get a little bit of time with the RBU in a conceal carry setup. During that time I attended the AMTAC Responsible Armed Citizen class where I used that setup for two full days. The RMR did not lose zero and the RBU iron sights did not either, no shift was detected at all. The final part of the class required each student to run a stress course of fire. Below is the video:













As you can see at times after I reload I am search for the dot inside the RMR. I will say that this is a training deficiency and not any issue with the RBU. I ended up fishing for the dot when I should I have defaulted to the iron sights. The short radius of the RBU's iron sights may have worked in my advantage but I did not utilize them properly, which is something I have changed in the way I train with an RBU equipped pistol.







