Anarchy Outdoors Magazine Extender CZ 22 LR 3-Round Black CZ-22LR-ME-3RD. Installation is fast and simple just remove the mag base plate then slide on the mag extension. Meticulously designed and manufactured with precision in the USA. Specifications for Anarchy Outdoors Magazine Extender CZ 22 LR: Manufacturer: Anarchy Outdoors Color: Black Magazine Capacity: 3 Round Gun Make: CZ Gun Model: CZ 457 CZ 455 Caliber: .22 Long Rifle Condition: New Features of Anarchy Magazine Extender CZ 22 LR Dimensions: 1.42" x 0.9" x 0.63" Package Contents: Anarchy Outdoors Magazine Extender CZ 22 LR What firearm models does the manufacturer say Anarchy Outdoors Magazine Extender CZ 22 LR is compatible with? The manufacturer says that Anarchy Outdoors Magazine Extender CZ 22 LR is compatible with CZ 455 CZ 457Anarchy CZ-22LR-ME-3RD: CZ 22 LR Magazine 3 Round Extender Black