Im going to the range tomorrow . I'll tell what Im going to do . I'll bring "little EVIL" ( yes I named my AR ) And I will run it hard and get the gas block as hot as I can . That way we will both know if the Magpul sights can be on the gas block or if they melt and lose zero . I will explain what I did and I will post the results with pictures of the sights and the targets .
As of this date 8-18-14 at 6:42am I became a proud grandfather I guess I'm officially old