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ARMS Sights

A.R.M.S. Inc. #40 Rear BUIS Sights have a long history of performance. Ideally suited for the AR15/M16 and M4A3 Flat Top pattern rifles, these sights have a low profile for mounting behind your combat optics or Red-Dot sights such as the popular EOTech HWS and Aimpoint Comp style sights. The #40 BUIS sights are spring loaded and deployable in a split second. When not in use, the rear sight is held down with a lock down latch that is easy to operate with bulky gloves or wet conditions.