Nice pistol Mr. JPG. Are all the parts on that pistol machined as they would have been back in the day or does it have MIM parts in it?Also, I know what you mean about the flat main spring housing. I replaced the plastic, flat mainspring housing on my Kimber Custom I carry for duty with a steel arched mainspring housing. It seems to point better with it. Not something you would want to do with a nostalgia pistol like your new Colt but its a good addition to a duty pistol.
tom - -
Sorry to take so long to answer, but it gives me topic for another entry.
Re: the parts.
I'm sorry, but I really can't detect MIM parts unless I can see the casting seam. I see none on this pistol, but that could simply be the shop paying close attention to finishing. I notice that, on the Colt site, they mention, "Forged knurled slide stop." They make no mention of other parts, so I'd wager at least SOME are MIM. If I can't tell, and if they're not high stress parts, then it makes little or no difference to me. SeeColt's site for their specs.
I hear you, concerning the plastic MSH. Several years ago, when Matt got his Kimber, the first thing he did was to raid my parts box and abscond with a steel, arched, checked MSH with lanyard loop. Not that he was ever gonna use a lanyard, but I'd shown him how to use the loop to open a be - - uh, soft drink bottle. (How long since you've seen a soda pop bottle without a twist off cap?) ;-)
Anyway, I did check the flat 1911 MSH with a magnet. It's steel.
In all fairness, though - - The plastic MSH on my Colt Officers ACP has been satisfactory. Remember, it is not a high stress part. The cross pin below takes the load of the mainspring. But, yes, I far prefer good ol' Connecticut Yankee steel.