The Mateba MTR-8: Emilio Ghisoni’s Unconventional Competition Revolver

Key Takeaways

• The MTR-8 is a double-action/single-action revolver, not a recoil-operated semiautomatic revolver.
• Its cylinder sits low and ahead of the trigger guard, while the barrel fires through the cylinder’s upper chamber.
• No authenticated factory production total is publicly documented; specialist estimates range from approximately 300 to 500 revolvers.

The Mateba MTR-8 occupies an unusual place in modern revolver history. Developed by Italian designer Emilio Ghisoni and introduced in 1983, it was the first production revolver in a family of experimental firearms that later included the Mateba 2006M and Model 6 Unica Autorevolver.[1] Its appearance was radical, but its underlying purpose was practical: Ghisoni wanted a competition revolver that could recover quickly between shots.

A Revolver Built Around Recoil Control

Conventional revolvers place the cylinder above the trigger, leaving the barrel relatively high above the shooter’s hand. Ghisoni instead positioned the MTR cylinder low and forward, ahead of the trigger guard. Although the barrel remained aligned with the cylinder’s upper chamber, lowering the entire cylinder assembly brought the bore closer to the hand and shifted much of the revolver’s weight forward.[1][2]

Ghisoni’s corresponding U.S. patent, filed in 1982 and granted as Patent No. 4,468,876 on September 4, 1984, describes a revolver in which the cylinder axis lies beneath the barrel axis. The patent expressly identifies the uppermost chamber as the firing chamber.[2] This distinction matters because the MTR-8 is sometimes incorrectly described as firing from the cylinder’s bottom chamber, a feature associated with Ghisoni’s later revolvers.

The MTR-8 is also sometimes confused with the recoil-operated Mateba Autorevolver. It is not an automatic or semiautomatic revolver. It uses a conventional double-action/single-action operating principle: pulling the trigger can cock the hammer and index the cylinder, while a separate actuator permits manual cocking for single-action fire.[2][3] Ghisoni did not file his U.S. patent for a recoil-operated revolver until 1986; that separate design used a moving upper assembly and recoil-powered mechanism to prepare the revolver for its next shot.[4]

An Unorthodox Mechanical Layout

Moving the cylinder in front of the trigger allowed Ghisoni to give the MTR-8 a narrow central frame despite its comparatively large cylinder. The all-steel revolver has a concealed hammer located within the grip area. A small lever above the left grip panel allows the hammer to be cocked or lowered without an exposed hammer spur.[1]

The cylinder swings to the left for loading and is released by a latch mounted on the yoke ahead of the cylinder. Ghisoni also devised a distinctive two-piece circular loader. The device retains the cartridge rims between hinged discs and is inserted into the space between the rear of the cylinder and the frame-mounted shield.[1][2] For collectors, an original loader is consequently an important functional component rather than a merely optional accessory.

The best-documented production configurations were the eight-shot MTR-8 in .38 Special and the eight-shot MTR-8M in .357 Magnum. The wider MTR family reportedly included the 12-shot, .32-caliber MTR-12 and the 14-shot, .22 Long Rifle MTR-14, together with carbine-style configurations and different barrel lengths.[1][3] Because some chamberings and configurations were produced in very small numbers, surviving examples should be identified by their actual markings and physical features rather than by generalized descriptions of the MTR series.

Production and Collectibility

No authenticated factory total for MTR-series production has been published. Specialist accounts place output somewhere between approximately 300 and 500 revolvers, with many reportedly sold in continental Europe.[1][3] These figures should be treated as estimates, not definitive factory numbers.

The MTR-8’s collector interest rests on more than limited production. It records an early stage in Ghisoni’s sustained effort to reconsider the relationship among the barrel, cylinder, trigger mechanism, and shooter’s hand. The forward cylinder and upper-chamber firing arrangement differ substantially from the architecture of his later 2006M and Model 6 Unica, yet the underlying objective, a lower recoil line and reduced muzzle movement, remained central to his work.[1][4]

When evaluating an example, collectors should verify the precise model designation, caliber markings, proof marks, serial number, cylinder capacity, loader, sights, grips, and any accompanying barrel or carbine equipment. Published production estimates alone cannot establish the rarity or originality of a particular firearm. Condition and mechanical integrity are especially important because replacement components and model-specific accessories are not commonly encountered.

The Mateba MTR-8 was neither a recoil-operated autorevolver nor simply a conventional revolver dressed in futuristic styling. It was a purpose-built competition design whose unusual form followed Ghisoni’s mechanical priorities. That combination of documented innovation, limited manufacture, and unmistakable construction gives the MTR-8 its enduring significance among collectors of modern experimental firearms.

Frequently Asked Questions

Sources

1. Marc Gorelick, “Emilio Ghisoni’s Revolvers: The Mateba MTR-8 to the Model 6 Unica,” Virginia Gun Collectors Association Newsletter, February 2021, pp. 2–8.
2. Emilio Ghisoni, “Revolver of Elevated Loading Capacity,” U.S. Patent No. 4,468,876, filed June 9, 1982; granted September 4, 1984.
3. Ian McCollum, “Mateba MTR-8,” Forgotten Weapons, December 10, 2018.
4. Emilio Ghisoni, “Semiautomatic Operation Revolving Cylinder Pistol,” U.S. Patent No. 4,712,466, filed February 13, 1986; granted December 15, 1987.