Felons in Colorado get only limited benefit from this ruling, because they are still generally barred by federal law from possessing a gun, and the Colorado Constitution doesn’t affect the application of that federal law. But in practice, a defense against a state prosecution remains useful even if it won’t work against a federal prosecution, because many such felon-in-possession cases are brought only under state law by state prosecutors (since there are many more such prosecutors in Colorado than federal prosecutors).