Ruger MK II

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I have a MAJOR problem with my MKII The mainspring assy will not budge. Now I know what your thinking but this is a new problem. I think I tried to remove the mainspring without firing it (I know that was dumb). I've had this gun since new and have stripped it many,many times with no trouble. However, this time I didn't fire it first, so when I pulled down the lever and tried to remove the MSA it came out about an inch or so and that was it. Now it is 100% stuck partially out of the gun. It will not go back in or come out and I don't know what to do. Removing the grips does not assist in any way, nothing to see. If you don't know a fix, can you please suggest a reputable gunsmith I can send it to. Believe me it is totally gamed part way out. By the way it has an aftermarket barrel on it but I don't think that has anything to do with it. I suspect the hammer is the problem but I can't fix it. Thanks in advance!
 
I've got a Mkll "NRA Endowment" that's been absolutely reliable over the years. CCI Mini-Mags are the fodder of choice for it, tho it'll feed most anything. Straight out of the box, it had an acceptable trigger...perhaps the only one I've ever encountered...my only gripe about them. Younger shooters who've handled my M41 Smith, a Colt Woodsman Match Tgt 4.5", and a cpl of 1911 & Sig conversion units, like the Mkll Ruger best of all. For a .22 Trail Gun, it'd be hard to beat. YMMv (but every gun safe NEEDS at least one Ruger Standard model)....Rod
 
I've been involved with owning, shooting and modifying Ruger Mark pistols for 51 years now, still have the very first one my Dad needed to sign for. I personally have over a dozen Ruger Mark II variations, and really did think there was no need to go any further with design improvement, except for maybe the very convenient move of the magazine release/latch position now on the Mark III pistols, and the addition of D/T of the receiver top for optics:

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I've always felt that Ruger would have done the Ruger Mark pistols "better" with a steel trigger rather than anodized aluminum, starting with the Mark II iteration, but instead, owners have been relegated to using the Volquartsen stainless steel trigger, the older Clark cast steel trigger, also used in the AMT Mark pistol copy, and then the Clark Custom steel trigger when those were still available. I used quite a few of the Clark blued steel triggers along with their hammer bushing and better pivot pin in the Mark II pistols when accurizing Mark II's, too bad those are no longer available.

The one, very nice thing, concerning the Ruger Mark IV pistol group is how easy it is to "switch" barrels using one common grip frame. I have a Mark IV Competition Target that is a very well built and accurate pistol:

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It's a simple matter to pop off the barreled action and then stick one of the Mark IV "take-off uppers" onto the grip frame that Volquartsen offers every so often:

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For $25.00 each plus $15.00 shipping, it was awfully hard to pass up these 5½ inch blued, unfired uppers, when Volquartsen offered 'em. This way, an owner could have an upper with just sights, and then another with no sights and only an optic or red dot sight with the very simple push of a button, and no need to re-sight in!
 
just a pic of my MK2 in the old pistol collection. I put the maple grips on it, just becuase.
 

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Rickford2011 said:
I have a MAJOR problem with my MKII The mainspring assy will not budge. Now I know what your thinking but this is a new problem. I think I tried to remove the mainspring without firing it (I know that was dumb). I've had this gun since new and have stripped it many,many times with no trouble. However, this time I didn't fire it first, so when I pulled down the lever and tried to remove the MSA it came out about an inch or so and that was it. Now it is 100% stuck partially out of the gun. It will not go back in or come out and I don't know what to do. Removing the grips does not assist in any way, nothing to see. If you don't know a fix, can you please suggest a reputable gunsmith I can send it to. Believe me it is totally gamed part way out. By the way it has an aftermarket barrel on it but I don't think that has anything to do with it. I suspect the hammer is the problem but I can't fix it. Thanks in advance!
Click to expand...
Remove the grips and drive out the hammer pin and maybe the sear pin.
 
Rickford2011 said:
I have a MAJOR problem with my MKII The mainspring assy will not budge. Now I know what your thinking but this is a new problem. I think I tried to remove the mainspring without firing it (I know that was dumb). I've had this gun since new and have stripped it many,many times with no trouble. However, this time I didn't fire it first, so when I pulled down the lever and tried to remove the MSA it came out about an inch or so and that was it. Now it is 100% stuck partially out of the gun. It will not go back in or come out and I don't know what to do. Removing the grips does not assist in any way, nothing to see. If you don't know a fix, can you please suggest a reputable gunsmith I can send it to. Believe me it is totally gamed part way out. By the way it has an aftermarket barrel on it but I don't think that has anything to do with it. I suspect the hammer is the problem but I can't fix it. Thanks in advance!
Click to expand...
My suggestion would be to send it to Ruger, i have done so with my MKll and it came back in great shape and problem fixed. They even paid for shipping, the only issue was i did have a trigger job and they had to put in back to factory specs, other than that i was very happy.
 
I see no reason to mail it back to Ruger. At the worst, he can knock out both the hammer and sear pins to unbind the gun and put it all back together....Its not that difficult.
 
I have a Mk3 Hunter that has been updated with a selection of Volquartsen parts over the years. Recently added a Burris fast fire dot sight. One of my favorite plinkers but I don't shoot it enough. The chamber indicator docent bug me. Reassembly was nuts at first but easy after some practice.
 
My fave is the 6 7/8" taper bull.
Blued.
Would like a MK2, w MK3 bbl.swapped, and then D&T for scope base.

Hate that billboard warning label
 
I enjoy my MK2 6in SS bull my wife got me for our anniversary years ago.

It had a rough feed ramp that would not feed anything and I really wanted to sell it for that reason. I gently polished the ramp with a Cratex bob and it will eat anything now. It is super accurate too.
 
IWAC said:
My Mk II KMK 514, with Cocobolo grips and holster I made for it. View attachment 840498 View attachment 840499
Click to expand...
 
Beautiful gun and amazing holster.
My good friend builds holsters...well he used to. Worked for Milt Sparks many years ago when Milt was in Idaho city.
Elmer taught to appreciate fine leather work, and that is some fine work you have done.
 
My Mk II stainless, 5 1/2 bull barrel, was the first semi-auto pistol I ever owed. Prior to that I'd only owned a super single six convertible. I thought the disassembly a little strange at the time, but having no basis for comparison, I said okay and pressed on. The pistol itself was/is a tack driver, and still a joy to shoot. I've taught new shooters to shoot with it, because the combination of very low recoil, and great accuracy show a new shooter what fun handgun shooting can be.
 
Not me. I wanted to like them and had an early MKI and a MKIIGC but could never get used to the grip angle. The MKII 22/45 was better but still a long way from the Buckmarks I enjoyed at the time. It wasn't until the MKIII 22/45RP that I found a Ruger .22 auto I could live with. Now have two of them and three Brownings.
 
SGW Gunsmith said:
I've been involved with owning, shooting and modifying Ruger Mark pistols for 51 years now, still have the very first one my Dad needed to sign for. I personally have over a dozen Ruger Mark II variations, and really did think there was no need to go any further with design improvement, except for maybe the very convenient move of the magazine release/latch position now on the Mark III pistols, and the addition of D/T of the receiver top for optics:

View attachment 962315
View attachment 962316
View attachment 962317
View attachment 962318
View attachment 962319
View attachment 962320
View attachment 962321
View attachment 962322

For $25.00 each plus $15.00 shipping, it was awfully hard to pass up these 5½ inch blued, unfired uppers, when Volquartsen offered 'em. This way, an owner could have an upper with just sights, and then another with no sights and only an optic or red dot sight with the very simple push of a button, and no need to re-sight in!
Click to expand...

LOVE the short slab sided barrel target model!
 
SwampWolf said:
That's me! Mr. Bad Wrench with banana breath. I've had Ruger .22 autos since they were selling them new for $37.50 retail-and I still hate field-stripping them. Always did and always will.
Click to expand...

It's why I got rid of mine, you practically have to be a gunsmith to reassemble them.
 
1KPerDay said:
If it was fully assembled and he just tried to remove the mainspring housing without decocking it first, how would the strut get behind the sear pin?
Click to expand...

Very easily. When it was last assembled. If the hammer was not pushed fully forward and the hammer strut was not allowed to swing backward freely so that it hovered over the mainspring plunger, and then the housing was pushed in all the way and the latch pushed in, then the strut will be captured behind said pin because the strut is now not behind that sear spring leg, it's still in front of it.
The smaller diameter pin (0.0930, or 3/32) in the grip frame, just below the actual sear pivot pin (0.1250, or 1/8) only does one thing. It's there to maintain the longer leg of the sear spring so that the upper end of that spring can work to cause the sear to return and then capture the hammer notch as the bolt pushes it forward, as the bolt returns home. If the strut is captured behind that sear leg pin, the hammer gets hung up and the bolt will not be able to get pulled back, nor the trigger pulled.
 
357smallbore said:
Own a wonderful 1999 Govt model. I believe this is the best semi auto 22 Ruger has ever put out. I've shot a bazillion rounds (ok, several thousand) without an issue. Little hard to take apart and clean, but once you get the hang of it. It's easy. Any shooters feel the way I do on the MKII?
Click to expand...
 
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