AR-15 Rear Flip-Up Sight

The AR-15 Rear Flip-Up Sight is an excellent folding rear sight for your modern sporting rifle. With this sight installed along with a similar front sight you can have the capabilities of using iron sights should your optical sight fail. There is an A2 style dual aperture allowing you to have both long and short distance targets sighted in for maximum accuracy with your rifle.

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20+ Years In Business


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Ships from Pennsylvania


The AR-15 Rear Flip-Up Sight is an A2 style dual aperture sight designed for modern sporting rifles. This rear sight is designed to flip up when needed or lock down when you are using your optical sight. Now you can have the best of both worlds with the capability to transition to your backup iron sights with the push of a button. With this sight system installed there will never be a chance for your optical sight to fail leaving your rifle useless in the field.

  • Low Profile Design
  • Ball Bearing Pivot Detent
  • Locks Automatically When Raised
  • Posi-lock Designed - Guaranteed Zero
  • Provides 0.65 MOA on M4 Rifles
  • Provides 0.49 MOA on A4 Rifles
More Information
Overall Rating
A-1 Manufacturing 5*
Review by Adrew J.
Received in three days after ordering. Will be back to buy at keepshooting again!
Overall Rating
Review by Wells E.
I purchased two of these flip-up rear sights. Used one for repair, other is spare.
Overall Rating
Good Price
Review by Henrique K.
Drop In spare flip-up rear sight for my AR15.
Overall Rating
Very Pleased
Review by Laura D.
Delighted with this order.
Overall Rating
Perfect Product
Review by Malek P.
Functions great as a spare flip-up rear sight for my AR15.
Overall Rating
Good for my use
Review by Khayree Z.
Received in three days after placing my order. Will be back to buy from keepshooting.
Overall Rating
Great AR15 flip-up rear sight
Review by Lorie Y.
Cost is good and shipping was quick.
Overall Rating
Excellent Price
Review by Tatum Y.
Finest AR15 flip-up rear sight for the buck sold by a awesome company. Thank you KS!
Overall Rating
First-Class AR15 flip-up rear sight A++
Review by Wyndell W.
Would Recommend this part
Overall Rating
Exactly as described.
Review by Oakley A.
Delighted with this order.
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