The Griffin Armament M2 Sight Rear is an affordable Micro Modular Sight (M2) compatible with Picatinny rail systems. The Griffin M2 sights offer an industry first modular base plate system which allows the user to mount the sights in a 12 o'clock position or they can be reconfigure to an ambidextrous 45 degree angle using the alternate angle plates (45 degree plates sold separately). The rear sight has an extremely low profile snag resistant slotted rear windage screw for easy but secure adjustability. Robust spring tension ensures accurate repeatability every time the sight tower is actuated. Griffin M2 Sights are low profile and are among the smallest backup sights on the market. Constructed from QPQ Treated 17-4 and ordnance grade steel.