I like the open top design of the Beretta. You can wipe or blow dirt off most of the mechanism. Empties will eject without bouncing around inside a housing. It is the locking mechanism used in the P38 and that was a very successful pistol.
Wonder what would happen with a real torture test like the guys did with the Hi-Point. Run over by a 3/4 ton pickup, drug behind a truck down a gravel road. Spent brass, and hardened steel bolts hammered into the muzzle, then a 50% over maximum charge load fired.
Or what about cutting it apart with an acetylene torch or putting it under a 50 ton drop hammer, or throwing the pistol into the sun?
Any Bubba can come up with some "torture test" that will break anything. But can Bubba
1) find a manufacturer who will bid to his specifications?
or
2) make a firearm that will pass his abusive tests?
Militaries have this problem all the time, it is called over specification. Some Gomer wants a firearm that will operate on the face of the sun, and then finds out, no manufacturer will bid no matter what contract value. Unless of course, it is a cost plus contract with cost plus fee. That is the Government pays for the all costs, and the fee increases infinitely as the cost of the contract goes up. Even if Gomer never gets what he wants, the contractor makes giga bucks.
Also, know any humans who can function after being run over by a 3/4 ton pickup, or drug behind a truck down a gravel road, or having hardened steel bolts hammered into their heads? What is the point of requiring mechanical items to survive conditions that kill the operator?