Originally Posted by
tacfoley
Many thanks for the images, and yes, they ARE pretty awful. The piece is a Pattern 53 musket or rifled musket, with a 1856-dated lock. For some reason it was sold out of service, and reproofed after boring out to a smoothbore shotgun. The lack of backsight is because shotguns do not need a backsight. Enfield-style nipples can be bought from Peter Dyson, as noted before, but you can only get the Musket or Top Hat caps as they are called, by showing your SGC to the dealer. I'm not familiar with shotguns, and I'm not sure if you have to note it on the SGC - more experienced advice is on the way, I'm sure.
A word of caution - do NOT try and shoot it without getting it looked at first by a competent gunsmith, and gentle loads of BLACK POWDER only are needed.