Sounds like a used first gen gun. Weaker? Yah in the sense that the current issue pistols are stronger but still plenty of gun for the 9mm cartridge.
First gen smooth grips
2nd gen has finger grips
3rd gen has finger grips and rails
4th gen has replaceable back grips
My advice... Price the newer guns and compare directly. Maybe all the "newer" bells and whistles are not worth the money?