some were made by Uberti .
 i have one i just finished converting to 38 long colt.
 on the top of the barrel its stamped Navy Arms . but if you look under the loading lever , it says Uberti and carried the Uberti  manufacturing marks.
 but you have to look and find at least the manufacturing markings to know for sure as i have heard that not all Navy Arms were made by uberti