The Yankee Hill Machine Co Front Flip Up Sight Tower has a standard style front sight guard that can easily concealed with the push of a button when not in use. The front sight flips up and locks in position when deployed. Accepts standard AR sight posts and hardware (Included). The front sight base features an all steel construction for strength. The two-piece design allows it to be easily mounted on barrels with a pinned and welded muzzle device. Also features a standard Bayonet Lug.