Tactical Folding Front & Rear Set Flip Up Backup Sights BUIS Black Protective wings shield the dual, same plane flip apertures & spring-locking A2 front sight post Full Heavy Duty Polymer Construction for Durability Clamps to most any MIL-STD-1913 Picatinny/STANAG 4694 railed hand guard and provides the same height-over-bore as standard A2 irons Heavy Duty Tactical Gear Front and Rear Back-up Sight Set for hunting and training Suitable for both non-lethal training applications and civilian airsoft sporting uses