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Blackhawk Folding Rear Buis (Back-Up Iron Sight)

Item Code: 71BU01

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This Folding Front BUIS (Back-Up Iron Sight) is compatible with MIL-spec height front AR sights. It locks down, and can be deployed with the push of a button. It is perfect for M4/AR-15 platforms with quick detach optics mounts.


  • Optimized for AR platform
  • Compatible with MIL-spec height front AR sights
  • Single hybrid aperture for simplicity
  • Locks into stowed position with push-button-actuated spring deployment
  • Aluminum sight blade/aperture and polymer base for optimal strength-to-weight ratio

Blackhawk Folding Rear Buis (Back-Up Iron Sight)
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WARNING: This product may contain chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. For more information, go to

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