Oh shit, ya. Odin ones are good from what I have read. Read good stuff about these also: https://www.brownells.com/rifle-par...=Avantlink&utm_content=NA&utm_campaign=Itwine Same price. The bitch about stuff is just finding it in stock and a decent price. EDIT: Found this one too: https://www.eabco.net/JP-Low-Profile-Adjustable-AR-Gas-Block-System-936-Bore_p_14702.html Little cheaper and a name I've heard of along with Odin.