Thread: Old Single shot rifle

HRB Co stands for Henry Rifle Barrel Company that did the conversion to .303 in 1898. AC II stands for Artillery Carbine Mark II. The fore-end is incorrect but is similar to the first pattern .303 carbines but it is too short between the band and the nose cap. I suspect that the barrel has been shortened, the correct carbine front sight refitted, and the fore-end shortened to be the correct length for the bayonet. The separate nose cap is from a .577/.450 Martini-Henry carbine. there could be other discrepancies that would be more obvious from a physical examination.