Yankee Hill Machine Gas Block AR-15, LR-308 0.750" with Hooded Flip Up Front Sight

These front sight towers feature a round hooded front sight guard for fast and accurate sighting. Made from steel and given a mil-spec phosphate coating, these sights will hold up in the most demanding conditions. The sight will accept all standard AR-15 front sight posts and hardware (included) and flips down easily with the push of a button for optic use. The two peice design of the gas block is easily installed using the four screws.