- Heavy weight polymer construction - Swing out cylinder - Single Action - Adjustable rear sight - Ergonomic textured grip - Fixed Hop-Up designed for 0.20g BBs - FPS: 110-160 Selling a used UHC Heavy Weight Spring Powered Revolver with a 6" barrel. Comes with a total of 14 realistic shells. One BB per shell, this revolver is a single action only though the cylinder can cycle on double action. Safety button on the side also releases the cylinder and a push of the rod with raise the shells, making it for easy reloading. If you have any questions, feel free to message me