A regular brought a Beretta PX4 Storm compact in to have some Meprolight night sights fitted. Gunsmith Bob drifted the old sights out and the new sights in, and said "You're not going to like this," combined with some less-than-kind words about Beretta QC:
Thing is, these are machined on a CNC mill, and they don't tend to make these kind of mistakes in onesie-twosies, but rather in a whole batch, until someone notices the error. This slide passed through somebody's (actually several somebodies') hands in the QC process, and that somebody approved it for finishing and then ultimate sale on the theory that "Meh, the hole's covered by the front sight base. Who'll notice it?"
Nice job Accokeek.. You should be real proud. The guy traded the pistol off. He also traded off the subcompact PX4 on his hip.
EDITED TO ADD:
Beretta (in comments) says:
"...the cut you're referring to is NOT a CNC mistake. The cut is present on all Px4 Compact pistols (I'm surprised your gunsmith did not mention it,) and represents a stress-relief cut. The cut is therefore not a flaw in manufacturing, but a planned and justified piece of engineering and designing."Now, Bob had never put nights on a PX4 Compact before, hence the rather novel appearance of the hole in the slide. (It's not present in either the full-size or subcompact models.)
So the problem now goes to Meprolight. If the asymmetrical hole in the left-hand side of the dovetail cut is standard across all PX4 Compacts, then why in the name of Pietro Beretta does Meprolight not make their front sight with a full-width base?