I've just taken in a very nice BSA Martini International MK1 Lightweight rifle all complete with P-Hale 25B rear sight and the correct ramped PH1 front sight with a barrel measuring 26 1/2". I was expecting a shot out gun which I was going to break for parts but my gut feeling is that this is a rare gun, firstly being a MK1 ( I've never come across a MK1 Before) and secondly being the Lightweight Model. I would like to hear from you Target/Competition guys in the know about these things as to whether my gut feeling is correct and that this is in fact quite a rare gun. Thanks...