The open slide always looked dicey to me, especially in a dusty environment.
Every Beretta I've ever handled had a failure to feed during shooting practice. I fixed them all by giving the magazine spring a little "stretchy-stretchy" (thx whoever showed me that, I can't recall now). Seemed kind of weird to me, what's the point of a ductile spring? I suspect gov't requirements at the root of some conflicted engineering decision...