Brand new This rail is designed to be attached directly to the slide. Screws are included. Material: Steel Angle: 25 MOA This picatinny rail [scope base] is compatible with the following models: CZ 457 Jaguar, CZ 457 Training Rifle, CZ 457 Lux, CZ 457 American, CZ 457 Premium, CZ 457 MTR, CZ 457 Varmint, CZ 457 Range, CZ 457 Thumbhole, CZ 457 Synthetic, CZ 457 Varmint Synthetic, CZ 457 Stainless, CZ 457 AT-ONE, CZ 457 Carbon We recommend to locktite the thread on the screws. Recommended tightening torque: 2 - 2.5 Nm Installation is possible to do by yourself. Made in CZ