Maximize rail space without sacrificing runtime. The EOTech Model EXPS2 allows for cowitnessing of iron sights and convenient side buttons to add a magnifier. It features and adjustable, locking, quick-detach lever for easy attachment and removal. Utilizes a single 123 lithium battery with a continuous runtime of 600 hours on a brightness setting of 12. FAST Riser securely elevates block-type red dot optics with a standard lower 1/3 cowitness picatinny mount to a 2.26a ^2 optical center line. FAST(TM) Riser provides an elevated M1913 Picatinny platform for direct attachment of optics such as EOTech EXPSA(R), Leupold LCOA(R), Vortex UH-1A(R), and other "lower 1/3" Mfg: Brownells