Trying to ID 7.5” factory Ruger Mark II Target stainless model.

fwb124

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I'm new around here, but thought the collecting forum might be the best place to start. I'm not trying to value it, but simply ID its model designation and pick up any other interesting info on it.

By Ruger's Mark II Target naming conventions, it seems like it should be something like a KMK-712.

I've searched hundreds of photos of Mark II's on two search engines and can't come up with one of this model. Odd thing is, I'm pretty certain I remember seeing this type at a couple of gun shows back in the '80's, around the same time the original KMK-10 stainless models were available. IIRC, the early 10" models were slightly tapered, starting at the standard 7/8" at the receiver and tapering down to 3/4" at the muzzle. This gun has the same slight taper, but, as it's 2.5" shorter, the muzzle diameter falls between those two dimensions, never quite reaching .75". IIRC, the muzzle appears to be factory. (I have a nice KMK-678G to compare.) Serial indicates a 1985 build (211-19XXX). It has the taller .51"h. front sight used on the KMK-10's rather than the standard .47"h. front found on the 5.5" Target models.

It came with the Clark trigger and the sear appears professionally machined and polished. (I doubt it was done by Clark, as it lacks the frame-mounted pre-travel screw. I don't know whether Clark ever offered their work without that screw.) Haven't disassembled it to spec out any hammer work. Trigger breaks at a very clean 3lbs, a little heavier than my Volquartsen-kitted Mark II's, but I'm hesitant to mess with a time capsule setup like this. Altogether, it's about the most primo long-range rig you could have put together in the mid-late '80's, short of new grips.

It was missing the center parts of the rear sight removed for the Burris scope rail, but a member on another forum hooked me up for the missing Mark II-correct parts. The Redfield 2-6X is tight as a drum & works perfectly. It was clearly mostly a safe queen. I scored a discontinued Uncle Mike's camo scoped pistol shoulder holster on eBay for a reasonable price to make it portable. I'd like to do some small game hunting with it. I removed and sold the Burris rail, since I have three of the SS finished B-Square Weaver/pic slip-on mounts that allow you to use the iron sights if you want. They're bulky, but functional. I've though about spending the $90-$110 round trip to have Ruger drill & tap for a pic rail, but I'll probably leave it period-correct.

I'm not at home, and will post more detailed photos with measurements when I get back in a couple of days. I picked it up on Gunbroker with the mint Redfield 2-6x stainless finish pistol scope installed June '24. I can consistently pop the small 6oz Coke cans at 75yds with it off a rest. Shooting .22LR pistols at long distance is one of my favorite things.

Thanks in advance for any guidance. Here are the best shots I have at the moment:

IMG_5643.jpeg
IMG_5660.jpeg
 
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See link. Ruger will tell you how it left the factory.
Thanks for the pointer! I was not familiar with that form. I will pursue it and report back.

I will take another look at the muzzle when I get back. It's possible the previous owner had the barrel shortened by whoever did the trigger tuning. I'll add some pictures.

IIRC, the muzzle contour looked factory, but, then again, when Tornado Technologies modified my '89 KMK-512 some 16 years ago, they duplicated the stock muzzle profile very nicely when producing a gapless, threaded muzzle protector. (Now that I think about it, they may have simplified matters by making the muzzle protector out of the front end of the ~1" muzzle section they parted off.) They also skimmed .016" off the diameter of the barrel to eliminate the roll-marked warning the machining had cut into when they shortened the barrel to 4 3/8". It was pretty amazing work, as you can see if you expand the images:


IMG_7866.jpeg
IMG_7865.jpeg


The very light skim wasn't obvious, as you can see from this shot with my KMK-678G:
IMG_8658.jpeg


It's a shame that TT became unreliable in more recent years.
 
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Another resource
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I'm not sure the Ruger on-line s/n look up will give you more than the year it came out. Don't think they do a breakdown of each gun's finish, barrel length etc but …. Could be wrong and I just don't know how to look for that there.
 
I'm new around here, but thought the collecting forum might be the best place to start. I'm not trying to value it, but simply ID its model designation and pick up any other interesting info on it.
When you looked the number up on Ruger's serial number lookup page, what model number did it say it shipped as? The 0154 is a KMK-10.
Chet15
 
When you looked the number up on Ruger's serial number lookup page, what model number did it say it shipped as? The 0154 is a KMK-10.
Chet15
Where do we find that info on Rugers web site please?
I can only find a list of what year they were made.
Thanks.
 
Welcome to the Forum!

I concur with a few of the statements above. First off,, a very possible cut down gun. Secondly,, to truly get the accurate model info,, spend the $10 to get a factory letter. That will give you the answer you seek!
 
Still waiting on the authentication letter, but subsequent examination after returning home leads me to conclude it is indeed a cut-down KMK-10. I can make out subtle machining marks that aren't obvious at even a pretty close glance. Whoever did it matched the reduced-diameter profile of the 10" nicely, as you can see:

IMG_6789.jpeg

(Credit for the above to Wirthwein's incredibly helpful Mark pages, which link I don't have to hand at the moment.)

And here's a close-up of the muzzle of my 7.5":

IMG_9513.jpeg


All things considered, I really like the looks of the 7.5" length with the subtle taper. I'll add pics of the gun minus the scope mount when I replace the internals the rear sight.
 
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