The Mateba Unica 6 is a rare semi-automatic revolver designed by Emilio Ghisoni, notable for its unique bottom-chamber firing and reciprocating upper assembly. This design significantly lowers the bore axis, aiding recoil management, though the heavy moving parts still create muzzle flip. The interchangeable barrels require individual zeroing, and disassembly involves a set screw to release the slide.
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