If there are dashes, the pistol was produced without such proof marks.
I've omitted complete serial numbers in some cases, so as not to upset anyone who may own the actual pistols, that prefer such information not be disclosed.
All Swedish Mausers were chambered for the 6.5×55mm cartridge, and all Swedish-made actions were proof-tested with a single 6.5×55mm proof round developing approximately 455 MPa (65,992 psi) piezo pressure (55,000 CUP).
Here is a link to the Beschussamt Ulm web page: (In German) There have been many P7 pistols imported into the United States that have had a certain mark removed from the slide prior to export from Germany.
All Swedish Mausers, whether built in Germany or Sweden, were fabricated using a Swedish-supplied high grade tool steel alloyed with nickel, copper, and vanadium, a product than noted for its strength and corrosion resistance.
These rifles, like other pre-M 98 system Mauser rifles, lack the third safety locking lug at the rear of the bolt and feature "cock-on-closing" (similar to the contemporary Lee–Enfield rifle) instead of the "cock-on-opening" style found on the German Gewehr 98 and most subsequent bolt-action rifles.
One of the most often asked questions about HK firearms comes shortly after the proud new owner brings his prized new HK home, and starts looking closely at the gun. The 'N' stands for "Nitrozellulose" (Neetro-tselluloze) or "Nitrocellulose" in English. The symbol to the right of the date code is a stag horn.
There are a number of unfamiliar symbols on the guns that I will explain here. This is a universal symbol found on German firearms that use modern nitrocellulose based propellants. It is the symbol of a particular proof house, located in Ulm, Germany.
I've compiled a fairly decent list of serial numbers and their related dates of import and/or manufacture, and hope this helps those who may be looking for such answers/information. AK172XX-3/00-.40, black plastic case, frame made in Germany, purchase included two 10-round reduced capacity mags and funky trigger lock AK22XXX-11/00-.40, Blue. If you need the screw in the middle, you actually want what's currently listed as the P228 screw (and maybe 229?