CZ .22LR magazine housing insert spacer and pin for CZ 455 457 512

This is the housing insert to allow CZ 455, CZ 457 and CZ 512 rifles to be used with .22LR magazines.

Since the CZ 455 CZ have used a universal rimfire magwell in .22WMR / .17HMR size to allow barrel changes, to size it down for .22LR magazines the insert is required.

Made from CZs proprietary tough black polymer it is held in place with a stainless pin.

CZ-UB part numbers 311233804014 and 273199002666.