The reason I got a great deal was that they had the early highly suggested upgrade parts (read as a soft recall). Both went to Glock right after purchase for a check over and update.
Glock said they would check and replace any parts that see wore or outdated. The result was getting back the two pistols with all new internals... The only thing that was original after the update was the barrel slide and receiver. We also were provided with new update magazines, cases, and glock tool cleaning kits. I cannot recommend Glock enough after this experience.
The first trip to the range the g19 was pretty tight and groups were in the 7" range at 21 feet.
As you can see below I now have it dialed in nicely after dry firing the gun for a couple weeks while watching tv.