Underground Tactical's replacement take down/ pivot pin set will make removing those tight pins in your AR10 a lot easier. By simply using the rim of your brass, you can pull the pin out with ease. Heat treated with black nitride, they will last you a lifetime. Not every AR10 is machined the same since there is no MIL-Spec dimentions for them. So far, we know that these work in the Cerro 308 forging, which are based off the Armalite AR10.