Most iron sights put on sporting rifles are complete garbage. They usually have a tall unprotected front sight with a barrel mounted patridge or buckhorn (worst kind of iron sight conceivable) that needs a tiny eyeglass screwdriver to adjust. If you want a durable useful set of iron sights, look past the junk put on sporting rifles and take a look at the sights on a M14/M1 Garand/ or AR-15.