.50 caliber, two groove bore, 30" twist barrels with folding express sights. Casehardened and engraved bar-action locks with bolted safeties. Checkered walnut stock with cheekpiece and steel buttplate. Spectacular original condition with the barrels retaining nearly all of the brown twist pattern. The locks and hammers retaining most of the original case colors.. Excellent wood and checkering. The bores are absolutely mint. In it's original mahogany case with label and tools. It is also accompanied by a letter dated 1857 from the original owner relating to the mfg. of the rifle.