A .320 Remington patent rolling block rook rifle

A .320 Remington patent rolling block rook rifle, heavy octagonal barrel 22.5 in., bead front sight, one standing and one folding leaf sight (50 and 100 yards), top flat engraved 'C. INGRAM. 18B. RENFIELD ST. GLASGOW', futher marked 'Brevet Remington' and with Liege control marks, underside of barrel with Birmingham black powder proof marks, half stock with side panels and chequered straight hand grip.