It's a Colt Government Model in .38 Super! I've been lusting after one of these for quite a while.
I now see why people pay extra for Colt over Springfield. The trigger is so very much better.
Edit: Better Pictures
|Colt Series 80 Gov't Model v Springfield Armory Model 1911-A1 GI|
After all of the horror stories I'd read about the series 80 lockwork I expected the worst. It's quite good. An extremely clean and smooth break and much lighter than the Springfield.
As it compares to another 9mm 1911 style gun. In this case a SIG-Sauer P238 in .380 ACP.