I am new to the o/u type of shotguns and I have a few questions. First I am looking at getting one of the new CZ o/u. I want a gun that I will not be afriad of putting some dings and dents in. I do alot of chucker and quil in some rough country. My 870 looks like it has been through a war! So what I am trying to say is Im looking for a so called workhores type of gun. The other question I have is I see that there is two types of triger set ups one with 2 triggers and one that they call a single selective triger. I have seen a few that have a swich down buy the triger what is that for? Thank you for your time and help.