Quantcast
  1. This site uses cookies. By continuing to use this site, you are agreeing to our use of cookies. Learn More.

9mm M&P, M&P Compact and Sigma mags...

Discussion in 'Handguns: Autoloaders' started by mr.72, Jul 7, 2008.

Thread Status:
Not open for further replies.
  1. mr.72

    mr.72 Member

    Joined:
    May 6, 2008
    Messages:
    330
    ok ladies and gentlemen...

    First the question and then the background...

    will a full size M&P 9mm magazine fit and function in a M&P Compact 9mm?

    and then (likely in your opinion, if you happen to have seen them) will a M&P magazine, apart from base plate interference, fit and function in a Sigma?

    The reason I ask is because I really dig my Sigma and don't want to sell it or replace it with something else. However I might consider shortening the grip to make it easier to conceal if there was a readily-available magazine that would fit in and work.

    Just looking at pictures it appears that a M&P Compact magazine might do the deed... looking at a picture of the two magazines (Sigma and M&P-C) overlaid it looks like the mag catch is in the right spot (might require a little reshaping) and the only other difference would be at the end of the grip:

    [​IMG]

    thoughts?
     
  2. Butter

    Butter Member

    Joined:
    Nov 12, 2007
    Messages:
    163
    Probably will. But to be honest, I am not a fan of using full sized mags (mags meant exclusively for the full sized versions compared to their smaller siblings) in compact and subcompact models even if they fit. The reason:

    Have you ever tried to do a quick tactical reload drill or a malfunction drill with mag replacement and slammed home the mag? If so, you recognize the size of the mag and the way the butt plate or bottom of the mag itself is generally designed to stop the magazine at a certain point. With the larger mag you may squish it up into the workings of the gun so far that it is no longer a malfunction issue and pushed it to the point of non-working jam.

    But it's up to you. :)
     
  3. Gary G23

    Gary G23 Member

    Joined:
    Jan 1, 2003
    Messages:
    1,451
    Location:
    Corvette City
    "will a full size M&P 9mm magazine fit and function in a M&P Compact 9mm?"

    Yes it will.

    I don't know about the Sigma.
     
  4. The Lone Haranguer

    The Lone Haranguer Member

    Joined:
    Jul 30, 2006
    Messages:
    11,717
    Location:
    Johnson City, TN
    Yes. It will of course stick out of the grip.

    Improbable.
     
  5. Disaster

    Disaster Member

    Joined:
    May 1, 2008
    Messages:
    402
    The full sized and compact M&P mags are interchangeable. That is you can put a full sized M&P mag into a compact M&P. Your best bet for checking whether a M&P mag fits in a Sigma is to go into a store that sells both and try them. If they do, it might make for a good conversion. If the mag retainer spring is the same, you might be in for some problems. On the M&P full sized, if you trimmed the grip you would be cutting away at the bottom of the retainer for the spring.
     
  6. mr.72

    mr.72 Member

    Joined:
    May 6, 2008
    Messages:
    330
    Thanks for the tip on the retainer spring Disaster. This is just the info I was looking for.

    It appears the biggest difference in the mags other than the base plate shape/angle/location is the ambi notch on the M&P mags.

    I'm just thinking out of the box a little bit. I'm not sitting here with hack saw in hand :) I am leaning heavily towards just getting another smaller carry gun but I figured this option may be a good one not just for me, but for others as well.
     
Thread Status:
Not open for further replies.

Share This Page