Hi Everyone... Thanks for adding me on. Been a CZ fan for many years. I have the CZ452 as stated and also a CZ527 Varmint in .204 and the CZ455 Varmint in .22 with the LR, Magnum and .17 HMR barrels. Love all them shooters..! Having a dilemma with my CZ 452 and the rear ramp site which I will post about for some help this evening. Thanks again for bringing me on board.