Re: 1911 Sizes
Full size is the Government model. 5" barrel.
I think Kimber calls that the Classic.
Then you have the Colt Commander. 4 1/2" barrel.
Then Kimber has their version of the Commander - the Pro. 4" barrel.
Colt Officers is a 3 1/2" barrel, with a shorter grip, that only holds 6.
Kimber makes that, too - calls it the Compact.
Auto Ordnance makes a Pit Bull, which is the Officers top on a Commander bottom, so it's 3 1/2" barrel with a 7-shot grip.
Kimber makes a Pro top with a Compact bottom, so it's a 4" barrel with a 6-shot grip - don't remember what it's called.
I'm pretty sure that Springfield makes one that is smaller than an Officers - 3" barrel, maybe? Don't know what that's called.
I don't know the "Defender".
Sure was easier, back when I was a yonker. Only Government Models and Commanders, and they all either said Colt or US. Now it's just - confusing.
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