Here are two Brazilians from the Second Group wearing the stocks I think they left the factory with. By the way, both revolvers have the U Notch rear sight.
One set of stocks is the WWI leftover concave type. Amazing to think they sat around the factory for nearly 30 years. Oh well, so did the components for rest of the revolver!
The other set was (I think) actually made for its gun in 1946, since the matching serial number is stamped on the inside. Ignore the Wonder Sight ... it will get replaced with a proper screw one of these days.