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Magnetron Revolver: The Build Part I - Mounting the Red Dot

If you check out the design overview for this Kimber K6S DASA "Magnetron" revolver build you'll see that this build has 3 main elements: the barrel shroud, the magnetic holster (hence the name), and the red dot mount. I decided to tackle the red dot mount first.


There are only a few options for mounting red dots on revolvers. The off-the-shelf mounts only fit specific guns and optics. There is no such mount for Kimber's K6S, so I need to make one for this build.


I'm planning on using a Holosun 407K red dot and my plan to mount it is pretty simple:

  1. Buy a replacement rear sight for the K6S

  2. Buy a mount for the Holosun 407K

  3. Destroy both with a combination of dremel and knock-off drill press

  4. Permanently attach them so that together they make a legit K6S red dot mount

Here goes nothing.....



The image below has all the components. The top is the DPP Mount which is intended for a Springfield XD, the middle is the aftermarket rear sight, and the bottom is the rear sight that the K6s ships with. What I need to do is grind off the dovetail on the DPP mount so that it has a flat bottom that I can attach the the rear sight.

Building Red Dot Mount for Kimber K6s Revolver Magnatron

Here you can see that the aftermarket sight (right) has a flat top and overall lower profile than the sight that Kimber ships with the gun. This means it requires less grinding to prepare for the red dot mount to be permanently mounted to the rear sight which will then be mounted using its dovetail that is built for the K6s..... Lot's of mounting.

Building Red Dot Mount for Kimber K6s Revolver Magnatron

I started with the DPP Mount. I needed to remove the dovetail it came with and make the bottom flat.

Building Red Dot Mount for Kimber K6s Revolver Magnatron

Then some light sanding on the K6s replacement rear sight and the surfaces they're ready to mate.

Building Red Dot Mount for Kimber K6s Revolver Magnatron

To ensure a permanent connection and therefore an accurate red dot, I planned to use both a bolt and JB Weld to connect the red dot mount to the rear sight. That meant I needed to countersink the red dot mount plate so that the bolt head didn't interfere with the Holosun.


I don't have a drill press (I know, shame on me) so I picked up a drill guide which helped keep my drill angle square to the mount and reduced the risked that I drilled too deep. It worked better than expected and the drill guide is much smaller than a drill press.

Milescraft Drill Guide

So, how's she look on the gun? Pretty good, but there is a larger gap between the front of the mount and the top of the revolver than I would like. I want as much contact between the mount and the gun as possible to support it and limit the chances of it moving or breaking.

Building Red Dot Mount for Kimber K6s Revolver Magnatron

A bit more sanding and the gap was removed. This Fudd revolver red dot mount is ready for action.

Building Red Dot Mount for Kimber K6s Revolver Magnatron

The 3 pieces ready for cleaning, gluing and painting.

Building Red Dot Mount for Kimber K6s Revolver Magnatron

2 Comments


MAGA Morphosis
MAGA Morphosis
Dec 12, 2023

Well how did your red dot mount hold up? How many rounds have you put through it? Any magnums? I’m thinking of making this mount myself.

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Uncle Fudd
Uncle Fudd
Dec 13, 2023
Replying to

This puppy is a total safe queen. No magnums and no real durability tests. Let me know how it goes making your own. I'm too scared to damage this revolver to put it through any work. Make sure you prep the pieces well before you JB Weld. That's critical to getting a tight hold, even with the bolt in the mount

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