I said that few 1911's are as tight as what I was comparing a rotating barreled pistol to, now I'm not so sure. I checked all of mine, they are all tight when in battery. Three points at the back (Top of barrel lugs area #1, both lower lugs #'s 2 and 3) and one at the front where the top of the barrel is tight against the bushing. I suspect now that most 1911's are as tight as these unless they are shot loose, like after 100K rounds.
I have CNC produced 416 stainless triggers to replace the plastic triggers on Colt Mustangs, Mustang Plus II's, MK IV Government .380's and Sig P-238's. Video on installation in Sig;http://www.youtube.com/watch?v=Jh2v_-87DRM
Also I made up a hundred Llama .32 and .380 recoil spring buttons, checkered nicely and blued.