Authentic single six 17 hmr/mach 2?

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BisleyBuff

Bearcat
Joined
Jul 16, 2022
Messages
53
Location
Delaware County, NY
Hi, going out shopping..saw a single six, blue, with both cylinders.

How can I tell if the mach 2 cylinder was an original ruger convertible cylinder with the gun or an aftermarket mach 2 cylinder?
 

9x19

Hunter
Joined
Dec 1, 1999
Messages
2,580
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Texas
If there's no box or end label to show the model number, you can look up the serial number on Ruger's site and it will tell you which model it shipped as.
 

BisleyBuff

Bearcat
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Jul 16, 2022
Messages
53
Location
Delaware County, NY
Looked s/n up on ruger site. Says discontinued model(correct specs) but doesn't say convertible or not. I guess the one I saw was a 17hmr with aftermarket 17 mach2cylinder.

Probably not worth taking a chance on since it was the mach 2 I was really interested in a revolver. Taurus is too big with too short 2" barrel. Oh well, I'll keep looking!
 

ibboatin28

Single-Sixer
Joined
Dec 20, 2008
Messages
148
Location
London Ohio
I've had several of the stainless convertibles and have installed some Borchardt cylinders in the ones that weren't convertable. (Blue in a stainless gun) I still have a M-2 cylinder if you need a picture of the aftermarket one.

To my knowledge they never made a blued conversion model.
 

s4s4u

Hunter
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Dec 16, 2006
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2,155
Location
MN, USA
Doesn't Ruger still mark convertible cylinders with the last 3 of the serial #?
 

BisleyBuff

Bearcat
Joined
Jul 16, 2022
Messages
53
Location
Delaware County, NY
I've had several of the stainless convertibles and have installed some Borchardt cylinders in the ones that weren't convertable. (Blue in a stainless gun) I still have a M-2 cylinder if you need a picture of the aftermarket one.

To my knowledge they never made a blued conversion model.
Yes, please if you message me a picture of the mach 2 conversion cylinder. The one I'm looking at looks unused, did it require gunsmith fitting?

Thanks much!
 

BisleyBuff

Bearcat
Joined
Jul 16, 2022
Messages
53
Location
Delaware County, NY
Factory Ruger .17M2 cylinders will also have a caliber rollmark around the cylinder.
Chet15
Thank you, that answers it. The cylinder just has "17-M 2" lengthways on it, no around the cylinder roll mark like typical Ruger cylinders. Must be an aftermarket. If I they let it go for a good price it might be worth it.

Thanks all, having forums like here lets us dip into a wealth of knowledge, something not available when I first started buying "unique" guns!
 

ibboatin28

Single-Sixer
Joined
Dec 20, 2008
Messages
148
Location
London Ohio
The blue is the Borchardt cylinder and the stainless Ruger cylinder. I've fitted several of the blued cylinders they just took a little stoning but nothing was required with the timing. Ruger never made a combo unit in blue to my knowledge.
 

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JAYDAWG

Single-Sixer
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wproct

Blackhawk
Joined
Nov 7, 2006
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505
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Ia
I briefly owned a stainless steel Single-six Hunter in .17HMR and .17M2, 7 1/2 inch bbl I think. I didn't own it long as it was quite heavy and I just wouldn't shoot it enough to warrant having it. It was used and I bought it on a whim, at the time I was really big on the .17M2 cartridge.
 

flyer898

Bearcat
Joined
Dec 19, 2023
Messages
46
Location
Rancho Cordova, CA
I am the silly person that bought the revolver sold at auction and described above.
Before bidding I contacted Atlas Collectable Firearms (the seller-Atlas) to inquire whether the 17 HM2 cylinder was factory supplied and Atlas assured me it was. The cylinder does not look like any Ruger covertible cylinder I have seen - and I have seen more than a few. Despite my skepticism, I placed a bid and now it is mine. I will follow up with Atlas and let them know my research results and the actual origin of the cylinder (until today I did not know there was such-a-thing as aftermarket cylinders for Ruger Cartridge Revolvers). I think the person I exchanged messages with believed what I was told. I have purchased several firearms (including two Korth rimfire revolvers made in Ratzeburg during the 60s and marked W. Korth) from Atlas and they have been top notch in every way.
The revolver is in jail until 6/8.
I examined it while we were doing the paperwork. I noted that the 17 HMR cylinder holds six rounds and the 17 HM2 cylinder holds eight rounds (I agree with those who identified the conversion cylinder as made by BRC http://rugercyl.com/ruger-cylinders/.)
The six-shot cylinder works normally and is in time. To my surprise the eight-shot cylinder is also in time and indexes all eight chambers properly. Those foks at BRC know a thing or six or eight. I did not realize an eight-shot cylinder and a six-shot cylinder on the same revolver was possible, but I suppose it comes down to the way the ratchet on the eight-shot cylinder is made.
I will get this revolver to the range after it comes home and report further. I think I will get a .17 bore-cylinder alignment rod to verify the chambers are lining up with the bore before I take it to the range.
 
Last edited:

contender

Ruger Guru
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Sep 18, 2002
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Lake Lure NC USA
You might go back to Atlas,, and say you are going to get a letter of authenticy from Ruger on it. A $10 letter, that can prove it's correct model info. They may be unaware of such letters. It may get you a little refund,, and if they are smart,, it may get them to do better research before trying to sell a "rare" Ruger.
 
Joined
Feb 6, 2024
Messages
357
Location
Utah
You might go back to Atlas,, and say you are going to get a letter of authenticy from Ruger on it. A $10 letter, that can prove it's correct model info. They may be unaware of such letters. It may get you a little refund,, and if they are smart,, it may get them to do better research before trying to sell a "rare" Ruger.
It won't. They got their money, they aren't giving it back. The only way these companies change their ways is if enough customers realize they are being shady and stop bidding.
 

Hankus

Blackhawk
Joined
Nov 13, 2022
Messages
594
Location
Florida Gulf Coast
I saw this one on GB, and the thread about the aftermarket cylinder so I decided not to bid. I DID follow the auction through to the end.
 

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