MMC Armory offers a variety of gas blocks and tubes to fit any build. We offer standard gas blocks as well as adjustable gas blocks. There are several finishes and styles to choose from inlcuding skeletonized, stainless steel, black nitride, and more. We offer gas blocks in .625, .750, .875, and .936. Some of the brands featured are Faxon, Aero Precision, Odin Works, Spikes Tactical, Fortis, Strike Industries, and more. Check out our MMC Combos for convenience and savings.