From Tom Laemlein:
A few years back I found these photos of a Marine Corps modification of the standard M1911 .45 caliber pistol. Unfortunately there was no accompanying documentation. A unique folding extension stock—it would interesting to know if any of the “Forgotten Weapons” readers have any information about this rare modification. I would suspect it helped accuracy but not enough to justify the extra weight and the cumbersome nature of the added metal parts.
Tom Laemlein runs Armor Plate Press, a military history publishing company that specializes in producing photo studies of 20th Century weapons systems.