As far as I know, MK II's do not come with the tang safety. I thought that only the old Model 77 comes with the tang safety and also with an adjustable trigger.
Alfredo
I think what I said wasn't clear. I bought an old model M77 with tang safety when the MkII's came out when they still had the old ones on the shelf - because I hated the new MKII's. Never owned one and never will.