Colt 1991A1 Weight
Very close to 38 ounces. Yes, I know there are lighter compact 1911s out there - Kimber's CDP II weighs in at 25 ounces empty - but you run what you brung. Plus, this weight includes a Chip McCormack stainless mag and 8 rounds of .45 ACP.
Not a particularly scientific measurement by any means, but I found it instructive. The difference in the grip size is particularly apparent here - the backstraps are even in this shot! The 1991A1 is a touch shorter, but appreciably taller.
1991 vs. G30 Length
The 1991A1 is shorter than the G30, although not by any significant amount.
1991 vs. G30 Height
The G30 wins this matchup by a good half-inch or more.
1991 vs. G30 Width
At first blush, the 1991A1 is a good bit thinner than the G30 - right up until you compare factory grips. Now, granted, there are several different slimmer grips out there for the 1991, which is certainly one strength of the 1911 platform.
1991 vs. G30 Ammo Capacity
Only two rounds difference between the two - the 1991A1's single-stack magazine holds 7 rounds to the 9 in the G30's double-stack magazine. Both pistols accept their larger-framed brethren's magazines, meaning that the G30 can take a 13 round magazine (up to 15 with extension) and the 1991A1 can take an 8-10 round magazine.
Cost. Here the Glock is the clear winner - new G30s retail for a little over five bills, whereas pretty much any new Officer's Model 1911 is going to run anywhere from $800 to "how much you got"$$$, but most are in the $1,000 - $1,200 range.
Well, I hope this makes amends for my previous effort. I read through the words I wrote not even two full months ago and had to chuckle - I don't know who I thought I was kidding pretending I didn't want a compact 1911... The Colt was a great deal from someone I'd dealt with previously and who was in a bit of a jam, moneywise - I made my standard offer, if he's ever in a position where he'd like to buy it back, I'll sell it for what I paid for it. I'll also give the right of first refusal.
Of course, the other big difference is that the 1991A1 doesn't have two different laser sights on it... ;)
That is all.
*I am, of course, lying. A compact 1911 has been on my WANT WANT WANT list for ages.