Need some help with a red dot mounting plate for the Mark IV

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Joined
Jan 5, 2024
Messages
58
Location
California
I have only seen two mounting plates for the Mark IV. One from Tandemkross and one from Lobos. Lobos one looks like it might be a bit sturdier as it is adapted to the curvature of the barrel where as the underside of the Tandemkross looks flat and only supported by the line of contact down the middle of the plate.

Does anyone have any thoughts on this matter, or a recommendation regarding mounting plate suggestion?

Paul
 
Joined
May 28, 2004
Messages
1,388
Location
MN
I've got a Burris FastFire lll, mounted on a Burris plate that goes into the rear sight dovetail (must remove rear sight to use mount).

It's extremely solid, and you can't get much lower profile.

I'm unable to take a pic at the moment, but will try to find a pic online to give you an idea of what I've got.
 
Joined
May 28, 2004
Messages
1,388
Location
MN
Riger Forum member Dave Schwaab posted a pic of his setup. Likely the same as mine.

Here's a link to his post… I didn't want to "steal" his pic. 😇

 
Joined
Dec 25, 2007
Messages
10,324
Location
missouri
I would most certainly go with the base that fits the upper profile.
The rear sight dovetail is a good mounting spot if the receiver isn't D&T but I'd use the tapped holes if available.
I have both. The direct mount base lowers the profile by 1/4".
 
Joined
Jan 26, 2008
Messages
823
Location
north carolina
Ebay has this burris fastfire mounting plate right now for $49.95. It works on any ruger mark pistol. I have one for my mark 3 and it works great.
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GypsmJim

Single-Sixer
Joined
Mar 19, 2011
Messages
401
The Ruger Mark III and IV were drilled and tapped for a Ruger base. I got the base with the gun, NIB. I have red dots mounted on both of them. If you didn't get one, they are available on Ruger.com. Several different styles.
 

bradford

Bearcat
Joined
Jul 15, 2008
Messages
23
Location
south texas coastal bend
I have a few Halosun dots, all green. I have the acss version too but perfer just the dot type for target shooting. I turn the brightness most the way down to be able to pick up the bullseye better. For self defense I would make it brighter because less accuracy and more speed is needed.
 
Joined
Oct 20, 2022
Messages
956
Location
Oregon
I know I'll get grief for this, but I have a mount from Amazon. I wanted something quick and I'm actually pleased with it. Close to the bore axis and clear of the ejection port. Fit was perfect and it's rock solid. Viridian green dot on one of the bargain Volquartsen blowout uppers. The upper came with the bolt and box. Planning on a supressor some day.
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Joined
Dec 25, 2007
Messages
10,324
Location
missouri
Since the 22 is low recoil AND the mount is on the non-reciprocating receiver, many of the dot optics that wouldn't survive use on another platform will work fine on the MK or 22/45.
 

Caladan

Bearcat
Joined
May 8, 2024
Messages
2
Location
AZ
So my post is a few months late, but it might help others in the future who might be researching this subject. The Tandemkross plate is not flat underneath. It does have an inwardly curved recess that matches the shape of the MK's receiver.

One nice thing about this plate is that it has more than one mounting pattern. TK also ships very quickly too, so I like dealing with them.

C
 
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