The highest quality replica money can buy second to only the Uberti/Cimarron gun. This is a replica percussion model pistol made by the Japanese manufacturer CAW ("Craft Apple Works").
It's made in multiple variants, a black version, a black and brass version, and even a sub-nosed all black version. None of CAW's models come with the trademark Snake grips. The one that is closest to Eastwood's is called by CAW the "4th version"
It is assumed that these replicas are a mix of plastic and metal as opposed to all-metal replicas which are illegal in Japan.
This replica does not shoot any BBs, it imitates the mechanism of the real firearm using caps in its cartridges.