Do you remember Mateba Arms? Everyone who watched Ghost in the Shell anime remembers. Like anyone who knows Marushin's offer, which once offered a line of revolver replicas of this firearm manufacturer.
Characteristic revolvers firing from the lower chamber, like Rhino models from the offer of another Italian company - Chiappa, are returning to the US market. Mateba Firearms will be represented in the United States by the KommandoStore company (best regards /k/), and sales are expected to start in the first half of 2020.
The 6 Unica Autorevolver powered by the powerful .357 Magnum round is to be imported first. It is unusual in that the drum, barrel and upper part of the frame retract with each shot, yielding to recoil force, tension the hammer and rotate the drum by one chamber. This is similar to semi-automatic pistols in the SA/DA system, where the first shot takes place in double-action mode, and each subsequent in single action mode. Unlike virtually any other revolver, where the hammer before each shot can pulled by hand, if one so desires.