$112.10
Diamondhead USA, Inc. Polymer Diamond Intergrated Sighting System (I.S.S.), Fits AR Rifles, Flip-up Front/Rear Sight, with NiteBrite, Black Finish 1499
$46.55
Diamondhead USA, Inc. Polymer Diamond Sight, Fits AR Rifles, Flip-up Front Sight, with NiteBrite Insert, Black Finish 1451