Diamondhead USA Diamond Integrated Sighting System
- Patented diamond-shaped apertures and upper housing
- Reference posts and horizon bars
- Same height of factory A2 sights
- Stows with small or large aperture active
- 1/2 MOA windage adjustment
- Flips up for rapid deployment
- Patented diamond-shaped housing
- Standard A2 front sight post compatible
- Flips up for rapid deployment
Diamondhead USA is a leading design innovator, manufacturer, and distributor of top quality accessories for the tactical weapons industry.
Ratings & Reviews
Really great sights on my BCM keymod!
by Brian Rutherford
I just ordered these sights and of course Primary arms delivered them fast and as always has the most rocking service ever! The sights are really good so I cannot understand anything negative others might say, they are built well like troys and lock into place tight with two small ball bearings. easy to install. Same screw type like troy. They don't sit up too high but are similar to the troy system height and not lower profile micros. A tad wider on the base but smoothed out. The diamond apertures are actually better when you get them on and sight in, you can match the front to the back diamond perfect and see them well for close in and far shots beyond 600 yards. I have troys, magpul, LWRC and these are just as good as those sights easy. They are tough too and different. Mine are on a BCM 14.5 Key Upper lightweight and a Royal Arms Lower with Geiselle trigger. I don't even use a scope...Love Primary for selling sets. Neato.
Best irons for the buck
by Indiana Jones
I really love this sight set. Very close to a 50yrd zero right out of the box. Lock up is tight. No wobble. Folds down with ease. Sleek look. Couldn't be happier with these. Thanks again to Primary Arms for ridiculously fast shipping
by Robert Z
Product arrived super fast. Fit right on rails and great sights. Will purchase more as needed for other builds. Thank you Priamary Arms.
by Mario Hernanadez
Service was super fast and items is excellent. Will be buying more from y'all.
Best sights money can buy!!
by Francisco Garduno1
These are the best sights I've ever bought. They are the toughest ones out there. Great sight picture no spring tension that pops them up quick that causes more wear tear.It's kinda hard to believe you got a bad set by what you said.
Awesome sight system, well made
by Dwayne McIntyre
This is an extremely fast and accurate system, if a bit pricey. Overall no complaints other than they are not assisted flip up, you have to manually raise them up... first world problems...
You gotta see them to believe them. Diamond on Diamond is quick !
No doubt these are the quickest target acquisition iron sights out there. They are well built and can take abuse. I just wish they were spring activated pop ups and then they would be everything I ever asked for to back up my Aimpoint. ..Oh and their D45s are awesome for scoped applications.
Superb sights for $80.00
by rich -
These sights are the best sights I have ever used.
<br>Excellent build quality, extremely serviceable and the Diamond sight picture is perfect with both my Eotech 512 and my Red dot co-witnessed.
These Sights are Great
by Gregory -
Picked up these sight on sale. They are perfect. As one commentator indicated the sights are almost zeroed right out of the box. I only had to do minor adjustments. I'm very impressed and highly recommend.
Very nice product well made. Then reason it's (4) four stars it's because the button to release the sight to pop up on the front sight is little hard to push. But other than that very good!!!
I See Level Lines... Everywhere. < . >
by ToneBone -
For some reason, I see the world in vertical & especially, level horizontal lines. For that reason, these sights work really well for the way I see the world, even through iron sights.
<br>The diamond shape < . > just makes aiming & centering, so fast & intuitive!
<br>A huge THANK YOU to Primary Arms for dropping the price so even I can afford them.
<br>I sighted them in with 4 shots, then topped my picatinny rail with PA 3x Compact Prism Scope. Happy! : )
by Daniel -
These sights are awesome!! I ordered on the 26th late afternoon and had them in hand on the 28th. Can't wait to take my rifle out to the range this weekend.
by Igor -
The sights seem to be well made and look awesome, however, both units were scratched on the bottom, makes me think i got used parts... hope not.
Good product and great price
Great price and fast delivery. Thank you PA. I got this pair BUIS for my new build and lookking forward sight them in. I'll get them again for future projects.
Yeah, they’re fast!!!
Got these on sale to install on a AR9 upper from FM products. My son tried these sights the first time on a demo USPSA course. He was faster with these sights than another AR9 outfitted with an EOtech 512. Lives up to the fast sight picture claim. Will definitely buy another!
Solid Back-up Sighting System!
by Andrew -
First off I want to thank PA for having exemplary customer service and fast shipping. This being my 5th purchase with consistent results I felt obligated to state this. Thank you for caring about your customer and surpassing expectations set by competitors.
<br>Now for the sights:
<br>The sights seem well built. They have a real tactile and positive lock; no rattling. The rear aperture rotates in increments and also have a positive lock-up. The materials used to construct the sights seem to be of high quality, although time will tell.
<br>The sight picture is unique to anything on the market currently and I have no doubt that whether in CQB or long distance training, that these sights will perform well.
<br>For my next AR, which will be a complete build, I will be ordering another pair of these. Thank you again PA!
Fast BUIS system
by Paul -
First off let me say PA customer service is 1st rate. I ordered late on Labor day & forgot an item I wanted. Called Tues to see if I could add to my order & Tony took care it. Package was on my door step Thur morning. Outstanding!!! Thanks Tony!
<br>I picked these up on sale & to be honest it is probably the best bucks I've spent in a while. They are NOT spring assist to deploy and IMHO that is a plus since it is 1 less thing to fail. They deploy with the flick of the thumb and lock up rock solid. Sighting in was super fast and easy. I ran a test thru a small combat course and these allowed me to shave almost 2 sec off my best time due to the nature of the sights. The shape & markings really draw the eye and make it fast & east to get on target.These are now on my must have list and I regret not buying a couple more sets while they were on sale. Hint, hint PA.
You won't find better at this price point!
by Charles -
I had purchased a S&W M&P (flat top) for my wife and while ordering some other upgrades I decided to give these a shot as they looked good, had good reviews, and were on sale. Delivered, installed and then to the range. Well made with great fit and finish. Sight picture is awesome. So much so I took my Yankee Hill's off my AR (sold them) and purchased a pair of these as replacements. Several reviewers noted there is no deployment spring and you have to manually raise the sights up. I agree with the reviewer that believes the spring is unnecessary and simply a part that can break. My Yankee's were spring assist and I do not miss that even a bit. You certainly can pay more and at the same time get less. I now buy a back up set whenever I see a good sale and pass them on to others at a small profit. Yes, I can recommend these to anyone.
Great back up sights
by Bill -
I've purchased 2 sets of these BUIS when they are on sale at Primary Arms. For the price, you can't beat it. The first set I put on my brother-in-law's Daniel Defense AR-15. We got on paper at 50 yards, then took it out to 100/200 yards. We were able to keep our shots with bulk 55gr ammo on a 6-inch Shoot N C with these sights. Certainly there are iron sighting systems that offer more precision, however these are back up sights that are designed to be used as a backup for a red dot or low power variable optic. They're built like tanks and look great, I wouldn't hesitate to pick up another pair.
Super fast shipping!
by greg -
A great sight and even better customer service. It's hard to put a price on this level of customer care Primary Arms provides!
Awesome sighting system
by John -
This sighting system is great. The diamonds work. High quality and solid. Got them on a one day sale from PA. Great price and fast shipping. My only complaint is that the attachment screw for the rear sight is missing the washer.
Love the sight picture
by Joseph -
Love them, and as others have mentioned it does seem to be fast and no doubt target alignment. Only minor complaint is if you adjust front sight for distance, to center the front post the diamond shapes would no longer align. I wish there was a design where the whole front diamond moved up and down.
<br>Primary arms is the best and I would definitely still recommend these!