Gen 2 guns were produced up until late 1997. To me, that is not "old." Was shooting Gen 1's in 1988, and have owned MANY of various models ever since.
The third pin was found in Gen 2 .40 S&W guns, and that third pin became standard on all models with Gen 3. That is a good feature, but nothing to be overly concerned about in Gen 2 9mm models.
