A few months ago got hold of a 20 Bore B Rizzini over and under. It is one of the low grade guns but it shoots well. Stock looks as if there is reasonable piece of wood, but covered i a thick dark brown varnish - which will be replaced at some point. But the one major complaint is that when you close it it has a nasty ringing type vibration rather than a stisfying clunk. You can also sense this when you shoot it.

Can anything be done to easily remidy this - liberal application of gun greese for example?