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

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You will receive fast, free shipping for all orders over $35

Shipping cost is $5.50 for orders under $35. We ship with UPS and USPS. 

Most orders ship out within 24 hours

You will receive tracking information immediately at the time of shipment. To expedite shipping, we may ship your order from multiple warehouses.  

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

If you need to request a return, contact us at 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 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 - we will do our best to make it right.

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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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