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Diamondhead Rear Sight Gen2 – Folding – AR15/M4/M16 – 1101

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90 Day No-Hassle Returns We Pay Return Shipping

We have a 90-day no-hassle return policy. We pay return shipping.

If you need to request a return, contact us at support@at3tactical.com and we will send you a return label

After 90 days, defective items will still be covered under the manufacturer’s warranty, where applicable.

Please refer to the product listing for warranty details. If you have specific warranty questions, contact us at support@at3tactical.com. We may direct you to pursue your warranty claim directly with the manufacturer.

Your satisfaction is our #1 priority

If you’re dissatisfied with your purchase, in any way, please contact us at support@at3tactical.com – we will do our best to make it right.

Fast & Free Shipping On orders over $50

You will receive fast, free shipping for all orders over $50

Shipping cost is $7.99 for orders under $50. We ship with UPS or USPS, depending on the item.

Most orders received by 1pm CST ship the same day

You will receive an email with tracking information at the time of shipment. To expedite shipping, we may ship your order from multiple warehouses. Orders placed on weekends, holidays, or after 1pm will ship the following business day.

Got Diamondhead VRS Drop-In and Free-Floating Handguards or any Mil Std M1913 Picatinny rail systems? Equip it with Diamondhead’s DIAMOND Flip-Up Rear Sight, for faster and greater precision.

Diamondhead’s DIAMOND Flip-Up Rear Sight’s revolutionary design incorporates the original and proprietary Diamond-Shaped Apertures™ (Pat. & Pat. Pend.) and a re-designed upper housing – allowing the eye to place the front sight post in the exact center of the rear aperture.


  • Proprietary Diamond-Shaped apertures, reference posts and horizon bars; For lightning fast target acquisition and centering
  • Re-styled Diamond-Shaped Upper Housing; New and improved
  • Dual same plane short and long range apertures (at exact same height of factory A2 sights); Pick them off whether they are near or far
  • Fully deploys and stows with small or large aperture active; Flip-to-ready and Stows-to-standby without fuss
  • Secure and accurate 0.5 MOA windage adjustment; Set windage and keep it set
  • Flips up quickly for rapid deployment; Ready in a flash
  • Folds down with the push of a button; Stows in jiff
  • Locking system ensures sight stays up securely and remains zeroed; Steady and solid
  • Easy installation with proprietary clamping system; Providing secure attachment to all Mil. Std 1913 Picatinny Rails
  • Diamondhead® PREMIUM Flip-Up Front & Rear DIAMOND, Auto-Ranger™ and HYBRID sights are designed to work together; Together they become the Diamondhead® Integrated Sighting System™
  • Mil Spec stainless steel and Type 111 black anodized 6061 T6 aircraft aluminum construction; Light, strong and protected to last
  • Combat Durable; Field tested


Material: Steel, aluminum

Finish: Type 111 black anodized

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