AR-15 Adjustable Rear Sight

AR-15 Adjustable Rear Sight

We have very affordable and dependable AR15 Backup Rear Sights for sale. This is an A2 Style Adjustable Iron Sight for AR-15 M4 Flattop Rifle.  This NcStar MARDRS is compact enough that it does not take up much of your Picatinny rail space.  You can have a backup rear sight ready to go at the moment's notice and still have space for a reflex, red-dot or holographic optic on your AR15 upper receiver.

In stock

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SKU
MARDRS
  $37.13
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Description

This AR-15 Back-Up Rear Sight should fit all AR15, M4 and M16 flattop picatinny rail upper receivers.  It is fully adjustable for elevation and windage with knurled click adjustable controls.  We also have M-16/AR-15 Flip Up Rear Sight if you are looking for another type of AR15 Backup Iron Sight.

  • Matte Black in Color.
  • Made of Steel and Aluminum.
  • A2 rear sight assembly with large and small rear aperture.
  • Large steel thumb nut and steel rail clamp for positive and secure attachment to your upper receiver.
  • Made by NcStar.

    • If you need a tool to sight your AR-15 Rifles, we have AR15 front sight adjustment tools for sale.

    More Information
    More From Brand
    NcStar Products
    Reviews
    Overall Rating
    Very Pleased
    Review by Noam H.
    Delighted with this purchase.
    Overall Rating
    Excellent AR15 rear sight
    Review by Liam F.
    Price is wonderful and shipping was speedy.
    Overall Rating
    Thanks keepshooting
    Review by Quinten S.
    Received in four days after ordering. Will be back to shop from Keepshooting.
    Overall Rating
    Thanks KS
    Review by Schad T.
    Drop In replacement rear sight for my AR15.
    Overall Rating
    THANKS KS
    Review by Kennon M.
    Finest AR15 rear sight for the price from a terrific company. Thank you keepshooting!
    Overall Rating
    THANKS keepshooting
    Review by Winthrop J.
    Would Recommend this part
    Overall Rating
    Excellent Price
    Review by Otis O.
    Best AR15 rear sight for the price shipped by a terrific company. Thank you ks!
    Overall Rating
    Great for me
    Review by Shamell D.
    Best AR15 rear sight for the price shipped by a terrific company. Thank you KS!
    Overall Rating
    Excellent
    Review by Lashaun Z.
    Delighted with this transaction.
    Overall Rating
    Exactly as described.
    Review by Varun P.
    These replacement parts are awesome. Would definitely recommend.
    Overall Rating
    Excellent AR15 rear sight 5*
    Review by Gerell V.
    Received in four days after ordering. Will be back to shop at KS again.
    Overall Rating
    Exactly as pictured.
    Review by Delshawn H.
    I ordered two of these rear sights. Used one for repair, other is spare.
    Overall Rating
    Excellent Company
    Review by Lauren Y.
    Received in four days after buying. Will be back to buy at keepshooting.
    Overall Rating
    Rapid Delivery
    Review by Kearney H.
    Received in three days after placing my order. Will be back to shop from keepshooting again.
    Overall Rating
    Good
    Review by Adolf Y.
    Leading AR15 rear sight for the price shipped by a awesome company. Thank you KS!
    Overall Rating
    Great Item
    Review by Tavarus U.
    A++
    Overall Rating
    Good AR15 rear sight
    Review by Caprice F.
    Price is wonderful and shipping was fast.
    Overall Rating
    Very Satisfied
    Review by Abraham M.
    Received in two days after ordering. Will be back to shop at KS again!
    Overall Rating
    First-Rate AR15 rear sight A++
    Review by Roosevelt V.
    These AR15 rear sight are great. Would buy again.
    Overall Rating
    Good Product
    Review by Vertis J.
    Perfect replacement rear sight for my AR15.
    Overall Rating
    Just as described.
    Review by Van M.
    Drop In spare rear sight for my AR15.
    Overall Rating
    Good
    Review by Kaj D.
    Pleased with this transaction.
    Overall Rating
    Great for my use
    Review by Tamir G.
    Lowest price I could find that was available. Delivery was fast with UPS.
    Overall Rating
    Very Pleased
    Review by Joaquin V.
    I bought two of these rear sights. Using one for repair, other is stored in my spares box.
    Overall Rating
    Very Pleased
    Review by Rayquan L.
    Best price I could find that was online. Shipping was quick through Fedex.
    Overall Rating
    Fast Shipping
    Review by Rochell J.
    Cost is good and shipping was fast.
    Overall Rating
    Good for my use
    Review by Tylier P.
    Drop In replacement rear sight for my AR15.
    Overall Rating
    Excellent
    Review by Lasaro N.
    5 Star
    Overall Rating
    Flawless Spare Part A++
    Review by Quincey Q.
    Cost is perfect and shipping was speedy.
    Overall Rating
    Excellent Price
    Review by Benji V.
    Best price anywhere that was available. Shipping was fast from Fedex.
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