Front sight • Quick Detachable Front Sight with Adjustable A2 Square Post Assembly • Fit All Picatinny/Weaver Style Rails • Precision Elevation Adjustments to Enhance Shooting Accuracy • Profile Designed for Installation on Gas Block Rear sight • Dramatically Improves Sight Pictures and Enhances Shooting Accuracy • Rugged Aluminum/Steel Construction with Matt-Black Finish to Withstand the Harshest Environment and to Meet Most Demanding Requirements • Precise MOA Windage and Elevation Adjustment in Accordance with Current Military Requirements • Spring-loaded Detent for Positive and Repeatable W/E Adjustments • A2 Style Dual Apertures with the Larger Rapid Target Acquisition Aperture for CQB Operations and the Smaller Precision Aperture for High Accuracy Aiming Operations • Exact Height to Co-witness with Standard Front Sight and Most Electronic Dot Sights • One Piece Integral Picatinny Mounting Deck Fits All Flat Tops • Equipped with Locking Retention Thumb Nut