That's right folks, why get new ones, when the only thing the old ones need, is an upgrade? A Glow-On Super Phosphorescent that is..lol If you have several firearms just collecting dust. Short ones, long ones, it doesn't matter. If the price of the upgrade is way over your budget. If there is no upgrade to be found. If you are a real 'do-it-yourself' type of individual. Let's get real, everyone on this forum is one! This might be for you!