[P95Carry]

I am not the 1911 knowledge fount at all but - ''flexible'' is maybe fraught with uncertainty because so many supposed ''drop-in'' parts can need at least slight tweaks or adjustments. IIRC the trigger group is perhaps where this potential problem comes home to roost sometimes.

I'll be interested to hear from the afficionados on this.

 

[Bud White]

on 1911's if they all use the last set of government specs then yes you could swap slide and frame but ti wont be as good as hand fit parts as the 1911 was designed that way ..

Where as a glock and Xd are you can just swap barrel frame triggers parts with no fitting and go right back to shooting ..

Not many pistols and no revolver's are able to swap parts easily

 

['75scout]

Another reason why I LOVE my GLOCK.

 

[OD*]

As Bud mentioned, if they are built to original Ordnance specifications, chances are good parts will inter-change, otherwise it's a crap shoot. Chris is also correct in his belief that the majority of so called "drop-in" parts aren't really a drop-in only proposition.

 

[Rob72]

Pretty much anything you put in/on will require some "tuning". The safeties, obviously, have to fit perfectly; slide release may need a bit of tweaking to be properly activated by your mags and engage the slide, etc. etc..

Now, you can drop most parts in, if you're willing to live with overly tight fits, or less commonly, some "slop". A set of needle files, a Dremel, and some 320/400 wet-dry paper, and a good 4 square ceramic stone, and you can do most anything you need to on a 1911. Comparing Glock to a Springfield TRP or similar is totally apples to oranges. A stock mil-spec 1911 will be only less "plug-n-play" than the Glock in its safeties.