Strike Industries Enhanced Low Profile Gas Block, .750, Black SI-AR-LPGB The Strike Industries Enhanced Steel Gas Block combines form and function to bring you a cost effective" robust" but lightweight gas block. Designed to fit under nearly any hand guard" the low profile gas block is a must have when running extended length free float set ups. The faceted design not only is cosmetically attractive" but the geometry adds strength where it is the most critical" while the skeletonized form factor saves weight.