The scopes that I have are all out of production as I like to buy used to save money and Leupold has a lifetime warranty. The model number (SKU) of the replacement for the fixed 4X I use to hunt is 58680. The 8X and 20X scopes have no current representation in production. The SKU for a rimfire 2-7X33 is 174179. The SKU for a 4.5-14x40mm (30mm) Side Focus Option is 170699.