Uh, I'm new here, and hate to rock the boat, but the troops in Iraq hate them. The mag springs are not ... springy enough. The guys keep stretching them, even though told not to. I guess the military doesn't feel like buying 800,000 new Wolff springs.
Before you chew me to bits, read this from
http://www.sftt.org/article06102003a.html
C&P from article follows:
9-mm. Beretta: There was general dissatisfaction with this weapon. First and foremost, soldiers do not feel it possesses sufficient stopping power. They desire a modification to allow for more accurate firing during limited visibility - tritium on the sight posts was a specific recommendation.
The 9-mm. magazine performed very poorly. Soldiers were stretching the spring in order to provide sufficient force to feed rounds into the chamber. Soldiers were not satisfied with the guidance from higher to not stretch the spring and only load 10 rounds in the 15-round magazine.