I disagree with the worn out becuase they have seen thousands of rounds post. outside of special operations military handguns see very little actual shooting. my unit prior to deployment to Iraq had berettas that maybe saw 75-100 rounds a year max and then about 150 rounds in train up prior to deployment. no one shot a pistol in our unit the entire time in Iraq. I would say the average G.I. beretta has fewwer rounds thru them than most of us put thru our personal pistols in 6 months.
My experience also a shooter on a military team is that the beretta is no better or worse than any other 9mm out there and I have shot or owned just about everything. the key problem which has been touched on is the military spends very very little time and ammo in pistol training. while they do spend alot of time with rifles those issued pistols get any training /ammo as an afterthought.
while not absolutely true, the pistol is generally carried by officers,tank crews and medical personnel who would not likely really need it. fWIW, all the medics and officers in my unit authorized a pistol took the opportunity to carry a rifle or carbine as well.