What you have is a cast iron RODEO Cap Gun, which was made by Hubley in 1938. The pics are not very good because I made them from my book, which is a xerox copy of Cast Iron Toy Pistols by Charles W. Best. (This book sells between $85.00 - $200.00, hence my copy; lol) I thought it was a Rodeo, but needed to know the length to confirm. If you look carefully, you can see the R-O-D letters. Very few cast iron cap guns from the 20's and 30's had plastic grips; most were cast iron like the guns. Hubley continued making the Rodeo during the 1950's, and they were made of pot metal with chrome and/or nickel finishes. Breezie