This FCD mag release is seriously underrated. The serrated button offers excellent grip, way better than standard milspec, especially when you're gloved up or moving fast. I put it on my 5.56 build with a carbine gas system and it’s been flawless. The ambidextrous feature is key for me, makes reloads super smooth no matter which shoulder I'm running. Nitride finish looks great too and seems really durable after a few range trips. 5 stars.