Good morning all: I sold a 27a5 pistol from the 70s (west hurley vintage ) and the buyer says the magazine falls out when he shoots it. He also said the mag catch hole was egg shaped which is common when people alter GI mags. It does lock in however. But when he shoots it, the mag falls out of the gun Does anyone know if a current auto ordnance mag from the Kahr company with fit correctly or should the buyer take a GI mag and keep enlarging the hole to fit? If he does enlarge it....does he need to enlarge it toward the feed lip or toward the bottom or both? Thanks for any input regards Haris