I was very fortunate to acquire this RIC Carbine model 1840. It was made by William Beckwith and is marked as such on both lock and barrel. On the butt tang is 'Ross Carberry 4', a small Irish city on the south coast in Kerry. It has Dublin City Irish registration numbers stamped on the face of the brass buttplate. The lock is pattern 1842. There is a Lovell type bayonet catch. It is a smoothbore of 0.65 cal. Barrel is 26" and LOA is 42 1/2". It has London private proofs on the barrel underside. The carbine is in very nice shape. An added bonus is that this is the very gun that is on the cover of Barry C. Chisnall's new book 'British Non Ordnance Military Carbines 1750-1900'.