H&R OLD & New Model small Frame Top-Break Revolver Extractor Cam Assembly

Iver Johnson New Style, Large Frame Top-Break Revolver Cam Assembly

H&R Large Frame Hammerless, Old & New Style, Original Top-Break Grip, Left side!

H&R Hinge & Hammer Screw, Nickeled, Large Frame Top-Break, Old & New Style

Iver Johnson Old Style, Large Frame Top-Break Revolver Cam Assembly

U.S. Revolver (Iver Johnson) Large Frame Top-Break Cam Assembly, PLEASE READ!

Howard, Eastern, Meriden, National Arms Large Frame Top-Break Cam Assembly.

Howard, Eastern, Meriden, National Arms Small Frame Top-Break Cam Assembly.