In the new (May!) issue of GUNS, Mike Venturino say of the differences between the 1911 and 1911A1,
Hmmmmm. Let's see: Sights, hammer, grip safety, trigger, frame (finger cuts), mainspring housing--that's six, all external, so according to Venturino, there must be at least seven internal improvements as well. For all my reading and study, I can't think of any. Can you? Metallurgy, maybe? Bore/rifling spec changes? Spring rates? What? :? :? :? :?Most of the improvements were internal but...