Yankee Hill Machine Co Flip Front Sight Tower with Bayonet Lug, Includes Round Hooded Front Sight Guard or Standard Style Front Sight Guard, Black, Fits AR Barrels YHM-9394 AR-15 Front Flip Sight Tower- These front sights feature either a round hooded front sight guard that allows for fast and accurate sighting or a standard style front sight guard. They sight base features all steel construction for superior strength in demanding conditions. The flip sight is easily concealed with the push of a button. It flips up and locks in the deployed position. This sight accepts all standard AR sight posts and hardware (Included). With this setup you get the convenience of a flip front sight with the same weight as a standard AR sight tower. This sight's two-piece design allows it to be mounted on firearms with pinned and welded muzzle accessories