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Are Ruger MKII and MKIII magazines interchangeable?

Discussion in 'GSSF' started by hogship, Jan 31, 2010.

  1. hogship

    hogship Patriot Extraordinaire

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    simple question......

    hog
     
  2. hogship

    hogship Patriot Extraordinaire

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  3. Davegrave

    Davegrave Dapper Dan

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    I know the MKII 22/45 and the MKIII 22/45 are NOT interchangeable. I found out the hard way when I had to ship one back to CDNN.
    So I will guess no.
     
  4. Davegrave

    Davegrave Dapper Dan

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    Looking at pics at midway it looks like the flared out bit on the mag that catches the mag catch are on opposite sides. Plus they list them separately. So I'm fairly confident they aren't interchangeable.
     
  5. M2 Carbine

    M2 Carbine

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    My MK II and MK III are both 22/45. I use all the mags in both guns.
     
  6. Hawker Man

    Hawker Man

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    I bet you could use a MK III mag in a MK II but not a MK II mag in a MK III. The MK III has the mag release on the left side by the trigger and the MK II uses the mag catch on the butt of the gun.
    Tom
     
  7. Davegrave

    Davegrave Dapper Dan

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    http://www.cdnninvestments.com/222210blunew1.html

    I promise. I have the MKIII and had to send it back. Most definitely DID NOT fit. I should have read better when I ordered, but I was getting a lot of stuff and just clicking away.
     
  8. hogship

    hogship Patriot Extraordinaire

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    Bump......

    Doesn't look like the question has been positively answered......yet!

    hog
     
  9. M2 Carbine

    M2 Carbine

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    I have six 22/45 mags. Two MK III and four MK II

    I bought the MK II in 1995 and the Mk III in 2007. So since 2007 I have been using all six mags in both guns. Loading all six magazines, for either gun, is just routine.

    BUT!! and my memory is fuzzy on this.
    When I bought the MK III, I THINK, the first thing I did was see if the MK II and MK III mags worked in both guns and they did.
    I had a lot of trouble with the MK III, which cleared up after I removed the lawyer crap.
    Now here's the part I wouldn't swear to. I'm sure, but not dead certain, that I was using the MK II mags in the MK III before I removed the lawyer crap, including the magazine "safety".

    Since the MK III mag has the cut out on the top left side, the MK II mags MAY NOT work in a unmodified MK III.
    But the MK III mags will work in a MK II.




    NO!!
    Now I remember, when I was having trouble with the MK III I was trying ALL the magazines in the MK III. The MK II mags did fit and function in the MK III.

    So, all I can say is the MK III and MK II mags were/are interchangeable in my MK II and MK III.

    MK III (22/45) on the left. MK II (22/45) on the right.
    [​IMG]
     
  10. fnfalman

    fnfalman Chicks Dig It

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    The magazines are entirely interchangeable. The MkIII mag has an extra slot that I can't figure out what the heck for (maybe to activate the mag safety?).

    I have an MkII and an MkIII. The first I did was to check out the mags and shot through them with both guns. MkII with MkIII mags and vice versa.
     
  11. AustinTx

    AustinTx

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    The Mark II mags don't have the cut-out to catch on the magazine release. What's going to hold a Mark II mag in a Mark III gun?
     
  12. fnfalman

    fnfalman Chicks Dig It

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    I don't know. Magic?

    They both click in places and they both feed. :dunno:
     
  13. fnfalman

    fnfalman Chicks Dig It

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    It just occurred to me that my Rugers are 22/45 MkII and 22/45 MkIII. Maybe that's the difference.

    [​IMG]
    [​IMG]
    [​IMG]
     
  14. deadite

    deadite Groovy.

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    I know for a fact that you can use "standard frame" 10 round Mark III mags in a Mark II, but not the other way around. I had both guns and used the Mark III mags in the Mark II without problems.

    Hope this helps. Check out post #'s 31 and 43

    http://glocktalk.com/forums/showthread.php?t=1139553

    deadite
     
    Last edited: Feb 1, 2010
  15. robotoid

    robotoid

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    This is correct. I have both a MKII and MKIII in standard frame (not 22/45), so I know.
     
  16. deadite

    deadite Groovy.

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    Thanks for the validation, fellow Michigander. :)

    deadite