A Quartet of Violinists

A quartet of violinists returns from an international competition. One of them was honored with the possibility to play a Stradivarius violin and cannot stop bragging about this. Another one grunts: "What's so special about that?". The first one thinks for a minute: "Let me put it in this way for you: just imagine you were given a chance to make a couple of shots from Dzerzhinsky's mauser..."