Unreliable — Or Worse
Even if a shooter is fine with the operation of the gun, which could fall anywhere between “no frills” and “out-and-out cumbersome,” it’s important to note there are major issues of reliability to test and failure points to be aware of before chambering a round and going on your merry way.
A biggie: many of today’s surplus guns were simply not designed to feed hollow points, instantly rendering them sub-optimal when it comes to a dedicated self-defense role. In some cases, the use of anything other than the ball ammo for which they were originally designed will cause the gun to fail.
In the German P1’s, essentially an alloy-framed derivative of the famed Walther P38, use of +P ammo is strictly verboten. The higher pressures may cause the top cover to blow off and vomit essential gun parts forward of the shooter. Even substituting standard-velocity 124-gr. ammo in my P1 as opposed to 115-gr. loads caused my slide safety to eventually work its way downward through the course of a magazine.
Along these lines, it pays to remember all of the little fiddly bits inside surplus guns were made god knows how many years ago, and out of steel compounds often fragile and already service-worn. Quite a few firing pins are notoriously brittle and simply do not hold up to dry-firing. Leaf springs sometimes snap, causing instantaneous dead triggers.
And speaking of breakages, the Sig Sauer P6 is another interesting case: it was designed with a hammer cutout so the part would snap when dropped. The idea was since the stress would likely be transmitted to the gun’s action, a broken hammer would probably identify guns with screwed-up internals. The moral — soldiers drop a lot of guns.
It’s also imperative to test the functioning of the gun’s controls before a live round is chambered. My CZ-52 shares a common (and unenviable) trait with many others — the decocker does not safely decock the gun. Instead, it acts as a second trigger. “Decock” the gun on a pencil placed against the breechface, and the firing pin will strike the eraser hard enough to send it clear out the end of the barrel. Sometimes, safeties in military surplus pistols aren’t. Trust them at your own peril.
Bear in mind each of these pistols arrives to you of questionable provenance. Unlike the soldiers who were the first to carry your gun, you don’t have the benefit of an armorer to fix your pistol when it goes down, nor do you have the backup of a nearby soldier and his rifle.