Do you mean .38 Super magazines? If so, I'd stick with magazines made for your particular semi-automatic. And these can be purchased at gun shows or on-line from companies such as Wilson, McCormick, etc.
hi jack , yes the magazine did have a slot in the rear similar to the .22 ace mags , as i remember colt had this model out several months before s&w brought out there model 52, help..help still need magazines , rj
The Colt NM Mk III may look like a standard 1911, but internally it is very different. It is a blowback operated pistol, it does not lock up using the Browning system.
I don't know of anyone making magazines for this pistol today. Further, the slide lock tab on the float of the original magazines is rather frail.
Phil Stewart, a dealer in magazines, usually has a number of original magazines in a range of conditions varying from pristine to repaired. The magazines are scarcer than hens teeth, and the prices asked reflect this fact.
1007 Howard St.
Mt. Vernon, Ohio 43050
His phone number is (740) 393 0704, though he can be very difficult to catch.