From the latest Fallout episode, the ghoul's Boot Gun on loan to Lucy. For 3D printing, you have the option to add a rubber band in the inside to provide a snap action to the hammer. Complete with matching Bullets. Simple to put together with CA Glue, just be sure to clean up the interior support material for a clean action on the hammer, or just glue it in place.Message me if any questions and I'll be happy to help. thank you!