A friend of mine has the Combat and I shoot it every time we meet at the range. He worked on the trigger and it has a very nice break with a light pull. The trigger is straight, which I don't particulary like, so is the grip rake. Not 100% sure but it has aluminium grips. It has front serrations and it is a better idea to use them to rack the slide because rear sights are big and the rear blade can offend your weak hand when racking in a hurry.
The gun is very well built and shoots soft. It is also very accurate, not scary accurate but it can produce pretty tight groups. He has shot tens of thousands rounds with that pistol and he experienced at least one locking block breakage. Barrel bushing needs to be checked from time to time and tightened if it needs to.
I also shot the Beretta Stock, which is the shorter version of the Combat, many times. Nice pistol as well.
Here in Italy Combat, Stock and Combat Combo can be found used at very cheap prices, from €500 to €800 usually for a Stock or a Combat (depending on the conditions), a little more for a Combo.