Diamondhead USA D-45 Offset Iron Sights

Manufactured by Diamondhead USA
SKU: 1799
MPN: 1799
Manufactured by Diamondhead USA
9 Reviews

In Stock

NOTE: Limit 3 per household. Quantities exceeding 3 will not allow checkout.

Standard orders received before 4:00pm CST will ship out the same day. FFL orders will ship within 3 business days as long as we have the information for the transfer destination.



The Diamondhead D-45 Integrated Sighting System’s patented diamond-shaped apertures and upper housing allow the eye to rapidly place the front sight post in the exact center of the rear sight aperture. Deploy the spring loaded D-45 sights and roll the firearm 45-degrees counter-clockwise in the event of optic failure or for fast CQB target acquisition.

Rear sight
  • Diamond-shaped upper housing and apertures
  • Matches A2 height
  • Stows under magnified optic with small or large aperture active
  • 1/2 MOA windage adjustment
Front sight
  • Diamond-shaped housing
  • Secure elevation adjustment
  • Compatible with standard A2 front sight posts
Diamondhead USA is a leading design innovator, manufacturer, and distributor of top quality accessories for the tactical weapons industry.
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BrandDiamondhead USA
FinishHardcoat Anodized
Fixed FoldingFolding
Manufacturer.Diamondhead USA
MaterialAluminum - 6061-T6

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see www.p65warnings.ca.gov

Ratings & Reviews

9 reviews


Good product. Excellent customer service!!


I placed my first order at PA and the items were in stock and shipped very quickly. Upon arrival one of the flip-up sights did not operate properly, no fault of PA. A short call to PA resulted in a pre-paid shipping label being e-mailed to me immediately and after it was received, a new set was shipped to me very quickly again, free of charge. I will definitely shop at PA again and recommend them to my friends and co-workers.The DH-45 sights are solidly made and are a great addition to a flat top with magnified optics that cannot be co-witnessed.

Fantastic Product!


Other than having to wait forever to get it, I love the product.

Awesome sights


Works as advertised. Great sights, quick shipping! Order shipped same day!



Slow shipping. Was supposed to arrived on 1-29-2015. Got here on 2-04-2015

Diamondhead's D-45 Flip UP Sights

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Hey People, FWIW & FYI: Primary Arms ROCKS! Their Service is Incredible, I order these last Monday the 9 of Dec. and received these AWESOME 45deg. Diamondhead Sights Thursday the 12th! Texas ground shipping to VA. WOW!
<br>I believe I actually got these on Weds. the 11th LOL
<br>Okay, and again, IF Your have been on the fence about these Sights, rest assured, These are Incredible, I love them and have been looking for some kind of deal on these. Well 8 yrs. of looking around and what did I see 12-9-2019, but these Killer Sights on sale! I should buy a couple more of these LOL!
<br>Thank YOU Diamondhead & Primary Arms!

Worth it.


Wicked fast shipping from PA, and fantastic product. My only gripe is that I had to really lube the pivot points/trigger before they would reliably deploy every time. Since then though, they’ve been dead on.


by -

The idea and design of these are unique. However, the first pair I ordered would not flip up or deploy the 45 degrees. I took them back and the folks at Primary Arms were more than willing to exchange them for another set. Unfortunately, that set had the same problem. They were unreliable and would only function properly about half of the time. Primary Arms was more than understanding and offered a refund.

Good as a backup

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One-button to release them into position and easy to set up. Folds back down fitting flush on the top rail and the contour of the rear sight doesn't get in the way of the charging handle so you can mount it far back. They don't "lock" into position when up but have enough spring tension to return after firing, barely noticeable with a 300 BO pistol recoil. I would say the Magpul MBUS are a little bit better, but these are well worth it.

D45 sights


These are phenomenal flip out sights, however, they have their quirks. When you first get them I suggest oiling the springs. They come dry as hell and don't pop out like they are supposed to. Once you oil them they fire out hard! Great sights if you use a scope vs red dot.