Based on the three similar that I have owned, I am guessing you have a 2165 Voere - they converted surplus mausers - that is why you have "matching numbers", or used santa barber commercial or whatever they could get. Lufstahl 3 is the grade of steel in the barrel. Kufstein was the town in Austria where the factory was. They put the tang safety on the standard mauser - my recollection is that the bedding better be perfect or you will soon split the tang behind that safety. Also, the ones I had were all based on military triggers that were converted / modernized to accept that tang safety - amazing contraption - must have had 30 pieces between the safety and trigger...