In this episode of the Royal Armouries' series "What Is This Weapon?", Jonathan offers a detailed explanation of the Mateba auto-revolver and the specific features of its highly collectible Italian carbine variant. Jonathan first dives into the mechanics of the Mateba, explaining the concept of an auto-revolver and breaking down exactly how its unique mechanism functions. This segment details the engineering ingenuity behind the firearm, which sets it apart from conventional revolvers.

The discussion then shifts to the specific Mateba model known as the "Grifone" carbine variant, highlighting what makes this particular design so sought-after by collectors. The episode also covers the various calibres it was produced in, touching on UK import changes and various legal quirks related to the weapon's design and ownership. Finally, Jonathan explores the Mateba's legacy, its high collectability in the modern market, and its notable appearances in pop culture.