New to the forum and have a question in regards to the Mark II's. Really like the FV-SR, but saw a Mark II F at wal mart and was wondering if the quality was all that different. I know the bolt handle is bigger, heavy barrel and threadded barrel, but is there an overall quality and realiability difference in them. Just looking for a fun plinker, but would like to be able to put the rail on top of the F if possible. Thanks for all your help!