Uberti "Stallion", Cimerron Arms "model "P Junior" and "Lightning" are all the same. Their made by Uberti but Cimerron assembles their own from parts.
Their made in .22 LR, 38 special and .41 colt with 3-1/2", 4-3/4"" and 5-1/2" barrels.
They are available with a standard grip "model P,Jr. or a Birds Heads grip "Lightning"
The model P, Jr. has the same size grip frame as a full sized Colt, SAA but a smaller handier frame.
I have both in 3-1/2" barrel length and they are much handier for my hands.