This rugged vintage tool came from the estate of a retired gunsmith and antique firearms repair expert. Its heavy cast construction, grooved inner jaw, and swinging clamp arm suggest it was used for gripping or stabilizing cylindrical parts?possibly a breech block, barrel section, or bolt housing. Mounting holes are on the same side as the moving jaw, so this is likely not a traditional bench vise. It may have been part of a specialized jig, fixture, or repair station?possibly for holding barrels or actions during delicate work. Use it as a functional tool or keep it as a fascinating relic from a gunsmith?s bench. Key features: ? Solid cast iron with aged patina ? Hinged jaw with interior ribbing for secure grip ? Rear forked end with hole?possibly for mounting or tension adjustment ? Measures approx. [insert dimensions here] ? Estate origin: Antique firearms repair We don?t know exactly what this was used for?action wrench, bolt vise, chamber clamp? You be the judge. A true mystery item, perfect for collectors of vintage tools or gunsmithing history buffs. Sold as-is, uncleaned, just as it was found. Add this curious piece to your bench, collection, or steampunk display! 5-3/4? long and 1-1/4? wide.