A similar (or the same?) MAC-11 M11A1 modification to accept Glock magazines which I blogged about back in March is up for sale on Gunbroker:

Link to auction – http://www.gunbroker.com/Auction/ViewItem.aspx?Item=175724611

The minimum bid is $5479, which seems steep to me. I have no idea how much those things are worth, but I think id rather have a few other guns than that one.  It has been re-listed on Gunbroker a lot of times.

Hat tip: theoperator


And converted from .380 to 9mm:

Was constructed from a .380 small MAC and a CCF Raceframe aftermarket stainless steel glock frame ($320).

The modification definitely improved ergonomics.  The rate of fire (ROF) is apparently comparable to a Glock18.

Another clear advantage of this conversion is that the 33 round 9mm Glock magazines (~$30) are less than 1/2 the price of the OEM 32 round zytel (plastic) Cobray magazines.  This is going by the $75 price on Cobray’s website , although the magazines do appear to be available for cheaper on online auction sites such as gunbroker.

One thing you’re giving up by doing the conversion is the ability to use these awesome aftermarket 58 round magazines available for 9mm regular MAC-11 conversions :P