Ron built the guns (he built a pair) from '51 RM Navys. He had to re-machine the cylinder and a make the conversion ring from scratch. The barrels are round Open Top barrels. Ron out sourced the engraving and I don't remember who he said he had do it.
The guns are not safe queens either. He shoots them on a regular basis.
Wish they were mine.
Coffinmaker
PS: NO, he doesn't want to make another pair or even one. Durn it!!