Seems ok but... - Next Level Armament Ascend AR10 Enhanced Take Down/Pivot Pin Set

They seem well made and durable. They look pretty snazzy as well. The pivot pin installed and functioned just fine. However, when I installed the takedown pin on my Aero M5 lower receiver it was too long and I couldn't lower the upper receiver into without forcing it. I don't know if I just received a bad or if they are all like that or just won't go in an Aero M5 lower. In any case they didn't work for me. I'll hold onto them and maybe they'll work for a later build.