I bought a red dot scope, but had an expired code. The nice thing about the codes is that they are predictable. I typed in SPG and three numbers. They all seem to start with a 1. The next two numbers can be any combo with doubles seem prevalent as well as 1s and 9s. For example SPG166 or SPG159. When you are ready to order type them in and see. A lot of them are expired or not yet in effect. Type until you find one. Good Luck.