March 27, 2018, 07:13 AM | #1 |
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Ruger MK III Sights
I have a Ruger MK III, I think it has a 4-3/4" barrel. The rear sight is in a dovetail and the front sight looks as if it's a ring wrapped around the barrel end. There's no discernible adjustment on the front sight.
In order to "shoot straight" I've had to drift the rear sight over quite a bit ... like to the practical limit in the dovetail. If I had to guess, I'd guess the front sight is not on straight but since I can't move it I can't really check that. Has anyone seen this before or have a clue why it seems so "off?" Other than this it's a fine shooter, groups are right where I'd expect them to be.
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March 27, 2018, 07:37 AM | #2 |
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There was recent post on rugerforum about an off-center front sight on one of these pistols. IIRC the front sight blade may be pinned into the boss vs dovetailed so no adjustment. You might secure the barrel in a padded vise and carefully(not using the grip for a lever) check to see if the barrel is unscrewing itself from the receiver.
FWIw, Ruger will likely resolve the problem if you contact them. |
March 27, 2018, 07:54 AM | #3 |
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I had no idea the barrel was screwed into the receiver ... for some reason I thought they were a single piece. Makes sense though.
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March 27, 2018, 02:45 PM | #4 |
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You sure that's a Mk III? Looks more like a Mk I or II. Mk III front sights have a screw holding 'em on. Your's appears to have the pin found in Mk I & II pistols.
Anyway, manuals for all of 'em are here. http://stevespages.com/page7b.htm There are exploded drawings in the Manuals, but the I and II drawing are here. http://stevespages.com/page7a.htm You won't be moving a Ruger barrel in a padded vise. I'd be suspecting that front sight blade is bent. Check that first.
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March 27, 2018, 03:14 PM | #5 | |
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Quote:
The blade might be bent, but if so it's been bent a really long time. The original owner (who could be lying but he seemed like an honest older gentleman) said it had "shot right" since he bought it.
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March 27, 2018, 04:33 PM | #6 |
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Check alignment of barrel and receiver. Can it be offset?
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March 27, 2018, 05:52 PM | #7 |
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I don’t know. Can it? Not sure how one would check that.
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June 9, 2018, 10:43 AM | #8 |
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Definitely a Ruger Mark III. You can tell by the right end of the magazine release just in front of the right side grip panel. Concerning sights.
Being a Ruger Mark III, isn't the receiver drilled and tapped for an optics base? A red-dot would eliminate any crooked sight condition. |
June 10, 2018, 01:40 AM | #9 |
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It's actually a fairly common problem with the 4" fixed sight models. I have seen it for years, and my old Mark I had the same issue. You can live with it or go to the hassle of indexing the barrel, which sometimes causes them to become jam-o-matics.
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June 17, 2018, 09:23 AM | #10 | |
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Quote:
If you "fix" this, will it make the pistol any better, or risk making it worse in a way that matters? If you don't mind my asking, what sorts of groups are you getting? I sold my last MKII, a 6 and 7/8 inch barrel, in the 90s and recently bought one with the short barrel, a 50th Anniversary model. I look forward to picking it up next week.
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June 21, 2018, 12:15 PM | #11 |
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June 22, 2018, 01:16 AM | #12 |
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No, I don't know where you get that information about that being a common problem, but it's way off base and not anywhere near the truth!
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