AR-15 Same Plane Flip Front Sight- This durable, all steel sight mounts on the same plane as the rear sight to give you a backup iron sight. The sight folds out of the sight line with the push of a button and flips and locks in the deployed position with ease. Mounts quickly and easily with the included thumb screw. Accepts all standard AR sight posts and hardware (included).Features : Same plane flip front sight Picatinny mount