I thought I knew my way around the Colt replicas, but just received, for free, a really nice '51 from a person that is VERY un-mechanically inclined, to say the least. I don't know what was originally wrong with the pistol, but this person tried to "fix" it. Cylinder is loaded, !!!! but pistol does not function to say the least. Out of time, sometimes cocks, sometimes doesn't, no half cock, hair trigger when it does cock, etc. On the outside, the gun is beautiful, looks brand new with no blemishes. Very possibly never fired. My question is, the barrel is marked "Lyman Middlefield Conn", which I haven't seen before. Does anyone know right off hand who the Lyman 1851's were made by? I have a sneaking suspicion that I may need some spare parts, although I suppose I can fit any of the internal parts regardless of manufacturer. Thanks in advance.