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Q about Steyr mags?

brisco
Can the Steyr M9 or M40 pistols use the high-cap mags from any other pistols?Or, are these pistols and mags so unique that no other mags will work, even with cutting new slots for the mag catch?Thanks all,Brisco
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Comments

2 comments

Date Votes
  • lrarmsx
    They will take a modified S&W Sigma mag with a new cut for the mag catch. I've looked at it and it will work. JudgeColt has actually done it and indicated that they work fine.
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  • JudgeColt
    I have done it with only the .40, but I assume that the 9x19 will work as well. To get proof of concept, tape a Sigma magazine in your Steyr and try it. That is what I did, and it worked fine. I then cut the new latch holes and have been enjoying 15 rounds of .40 in my Steyr M40 ever since.
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