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