Steve, I've sent you pictures of my Fuller gun.
As to conversions I have single 20 bore that says 'Converted by E. Roberts, Birmingham' in the top. Careful examination just reveals that he took a single muzzle loading barrel, brazed on the breech hook and fitted it to an action with top lever and then stocked it. The only original piece from the conversion appears to be the barrel!
I have an interesting Murcott double 20 bore hammerless that is not a 'Mousetrap' but has the general appearance of a box-lock although the cocking is unusual. I showed it to Graham Greener and looking at it it bears some similarities to the Greener 'Facile Princeps' model. It was always though that Greener bought out Murcott for the London address and rights to the 'Mousetrap' although Greener never seemed to have used that patent nor made guns under the Murcott name unlike his use of Needham's name. Could Murcott have inspired the Facile Princeps and this is what interested Greener? Another Gunmaking mystery! Lagopus…..
