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Diamondhead Front Sight – Folding – Gas Block Height – AR15/M4/M16 – 1551

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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.

Diamondhead DIAMOND Gas Block Front Combat Sight for AR15

The Diamondhead DIAMOND (Gas Block) Front Sight mounts directly to an existing railed gas block of the reduced gas block height. The gas block sight comprises a proprietary Diamondhead Premium sight base (of increased height to compensate for the lower gas block) and a Premium DIAMOND upper sight housing.


– Rail mounted, Diamond folding sight – incorporating the (Pat. & Pat. Pend.) diamond-shaped upper housing
– Mounts directly to a railed gas block, providing secure and solid sight attachment to barrel
– Allows for sight stability, eliminates potential handguard movement and holds a true zero
– Taller sight to compensate for (below receiver height) gas block
– Proprietary Diamond-Shaped Housing™ frames & centers the target with speed and ease
– Diamondhead® Series Flip-Up Front and Rear DIAMOND sights are designed to work together to create the (Pat. Pend.) Diamondhead® Integrated Sighting System™
– Mil. Spec. stainless steel and Type 111 black anodized 6061 T6 aircraft aluminum construction
– Easy installation with proprietary clamping system, providing secure attachment to all Mil. Std 1913 Picatinny Rails
– Flips up quickly for rapid deployment; stays up securely
– Folds down and stores easily with the push of a button
– Secure and accurate elevation adjustment
– Standard A2 size front sight post
– Combat Durable

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Customer Reviews

Based on 1 review
Review of Diamondhead Front Sight

Fits well, works well. No Problems...!