GG&G A2 Flip Up Rear Sight with Locking Detent (BUIS)
SKU #: GGG-1005
The A2 BUIS can be used as a co-witness iron sight with most of the red dot sighting systems. This sight features the standard A2-style double peep aperture and has full windage adjustment. It uses the Colt-style windage knob and windage screw. One click of the windage knob provides approximately 0.48 MOA change when mounted on the M16A2E4 rifle and about 0.65 MOA on the M4 carbine.
Initial zero is set by adjusting the weapons fronts sight post. When in the down position, it will clear most optics. The A2 BUIS mount body and sight stem are manufactured from 6061 T6 aluminum and black hard-coat anodized per mil spec. These are the same back up iron sights used by elite armed forces and law enforcement teams world wide.
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