"Platinum" Mike Perry is taking his talents to the Bare Knuckle Fighting Championship -- the MMA fighter has inked a new deal after 5 years with the UFC ... and he's promising to wipe the floor with his competition.
30-year-old Perry -- who has wins over guys like Paul Felder, Mickey Gall and Alex Oliveira -- did not have his contract with Dana White's org. renewed ... which made him free to follow Paige VanZant's lead to the BKFC.