Originally Posted By hotbiggun42:
Thicker chromed lined barrels. I belive they are double the thickness of std barrels.
This is false. Hammer forging has ZERO to do with chroming.
While a hammer forged barrel MIGHT have a longer life than a button rifled barrel, in semi-auto fire, the difference will be difficult to see. Most Semi-auto barrels will last upwards of 20k rounds, and most likely longer and still retain 3-5MOA, which is more than enough for a defensive or hobby weapon.
If the Hammer forged is in stock, and you have the money, there isn't a reason not to get it. However, if the same model is in stock with button rifling, I wouldn't bother, personally.