TacFire Tactical 45 Degree Offset Rapid Transition Front & Rear Back Up Iron Sights TacFire official product, tactical 45 degree Offset rapid transition back up iron sights with Picatinny/Weaver mount Low profile fixed 45 degree ambidextrous iron sights with fully adjustable 1/2 MOA windage and elevation Front sight A2 post with elevation adjustment Rear sight with dual Aperture with windage adjustment designed for close QUARTER Battle