Front and rear flip-up sights are made of tough, metal-reinforced polymer with steel apertures for both light weight and durability. Sights snap up into position instantly under robust spring pressure when the finger pad is depressed, and can be easily retracted to the folded position with one hand. Front sight is designed to be mounted to a handguard rail on the same plane as the receiver rail; it is not designed to be mounted on a gas block. Rear sight has flippable apertures, large for close-range shooting (0-100m) and small for longer-range applications (100-300m), with a notch at the top for quick CQB sighting or engaging targets at 500-600m range.
AR-15, Issue:09, Page:060
Big Book Catalog, Issue:66, Page:058
SPECS: Reinforced polymer, matte black. Steel apertures, matte black. Both sights are 5⁄8" high when folded, 1¾" total height when deployed. #71L-F Front Sight – 2¼" long, 13⁄16" wide. Not for use on a gas block. #71L-R Rear Sight – 2 ¼" long, 1¼" wide.