A. C139. Allowing for the mounting of traditional Weaver rings or 1913 (Pic) rings. A 22lr CZ 457 MTR, with a 20. EGW one-piece scope mounts are the obvious choice for hunters and tactical shooters alike. . Mounting Hardware is Included. . EGW mounts is made specifically for the CZ 452, 453, 455 and 511. .