CZ-USA manufactured this magazine for the CZ 550 FS rifle, chambered in .243 Winchester. The maximum capacity for this magazine is 4 rounds.
CZ products are imported exclusively by CZ-USA, a wholly owned subsidiary of the parent company, Ceska Zbrojovka a.s. Uhersky Brod, (CZUB) of Czech Republic. CZ firearms have been available through normal channels in the US since 1991, through such importers/distributors as Bauska, Action Arms and Magnum Research.
The CZ 550 FS features a classic Bavarian-style Mannlicher stock, steel muzzle cap and a 3-position safety. This safety is unique in the CZ line to the FS and Carbine Composite models.