This Single Shot Adapter is constructed of polymer and is compatible with CZ 452/453/455/513/512 chambered in 22LR/.17 Mach 2 calibers.
Specifications:

Caliber	22 LR/17 HM2
Capacity
Finish	Black
Model	Single Shot Adapter
Material	Polymer
Type
Model Fit	CZ 452/452/455/513/512
Brand Fit	CZ
Max Capacity