NcStar AR-15 Flip Up Font Sight (Gas Block Height)

For a durable and compact flip-up front A2 iron sight the NcSTAR MARFLF is the AR-15 back-up front iron sight that should equip your AR-15 rifle. Features: - Precision made flip-up A2 front sight. The MARFLF will fit virtually all AR-15 Picatinny rail gas blocks. - Manufactured from steel and aluminum, the MARFLF will not melt on your gas block under sustained shooting, unlike other manufacturers plastic back-up front sights. - A2 front sight is fully adjustable for elevation. - Front sight post fold down out of view of your optics when not in use. - Large steel thumb nut and precise rail clamp for positive & secure attachment to your upper receiver. - With the MARFLF flip-up sight folded down, it's 2 1/16 Length X 3/4 Height (mount height) & 13/16 Height (A2 front sight post when folded)