Would an M1911 MEU fit into a Hi Capa molded polymer retention holster? I understand that the grip dimensions are different, but would the slide, upper frame and trigger guard of an M1911 fit the shape of a Hi Capa retention holster?
Depends which make of MEU and which brand of holster. Out the box? possibly the Frame and slide are the same width but are different shapes. it's more likely it will require heat and refitting.