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Feyachi S27 Fiber Optic Iron Sights Flip Up Front and Rear Sites with Red and Green Dot Picatinny Backup Sight Set

4.5 4.5 out of 5 stars 3,152 ratings
$29.99
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Purchase options and add-ons

Brand Feyachi
Color Black
Style Fiber Optic
Sport Hunting
Item Weight 0.04 Pounds
Material Aluminum
Magnification Minimum 1 x
Compatible Devices Picatinny Mount
Mounting Type Picatinny Mount
Night vision No

About this item

  • More Visible- Easy visibility of the S27 fiber optics iron sight with red and green dot; Quick to deploy with flip-up design, simply push the button and folded down, they must be manually flipped up(no spring assisted pop-up), allowing for quick deployment.
  • Dual Aiming Aperture- Rear sight has dual aperture for quick target acquisition with windage adjustment, perfect for short and long distance.
  • Machined from lightweight and extremely durable aluminum, Mil-Spec hard anodized.
  • Front Sight- A2 post Elevation adjustment (Adjustment Tool not included); Rear Sight- micro style windage knob features same MOA adjustment as standard sight.
  • Easy Installation on Rail - Allen wrench included, low profile flip-up sight set designed to mount on standard picatinny and weaver rails.
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  2. A+2

    At Feyachi, we're passionate about providing high-quality tactical sports gear that keeps you safe and comfortable during all your outdoor adventures, from hunting & camping to shooting and more.

    We value integrity, hard work, and innovation. Our experienced team creates innovative, fashionable, and reliable products and we are dedicated to providing you with an enjoyable experience whenever you choose Feyachi.

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Product Description

1

Folding Adjustable Aircraft Aluminum Fiber Optic Iron Sights


Feyachi S27 Fiber Optic Iron Sights make a great upgrade for your rifle, fiber optic front, and rear sight in red, and green allows for faster target acquisition, it works alone or co-witness with red dot sights. Machined from hardened aircraft aluminum and finished in MIL-SPEC hard-coat anodizing. Simply pushes the side button and fold the sights securely out of the way until you need them again, low profile 0.44IN when folded down.

2

Picatinny Shockproof Base

0.15-inch metal lock bar of iron sight is designed to be stuck in the slot of the 20mm picatinny and weaver rail to be shockproof.

3

Fiber Optical Fiber Dots

Built-in Optical Fiber Dots for Rapid Target Focus in Outdoor Daylight Environment.

3

Two Rear Apertures

The large one provides a wide field of view for close-range targets whereas the smaller aperture helps in shooting long-range targets.

4

Flip-up Design

Flip-up design with spring load push button, allowing for quick deployment.

1

Product information

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Feyachi

Feyachi S27 Fiber Optic Iron Sights Flip Up Front and Rear Sites with Red and Green Dot Picatinny Backup Sight Set

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Customer reviews

4.5 out of 5 stars
4.5 out of 5
3,152 global ratings

Customers say

Customers like the quality, performance, and fiber optics of the aiming scope sight. For example, they mention it's well made, works well, and has high end performance. That said, some complain about the flipping and adjustability.

AI-generated from the text of customer reviews

261 customers mention231 positive30 negative

Customers like the quality of the aiming scope sight. They say it's well-made, strong, and adjustable for windage and elevation. They also appreciate the pop-up fiber optics and the fact that it'll fit well.

"It's great overall. Love the red and green dots. It's easy to attach and easy to use...." Read more

"They are very good and glow when there uv from the sun they are very good quality and very affordable" Read more

"...They stay on securely, are metal not cheap plastic, and are easily adjusted with the use of a tool (sold separately)..." Read more

"Easy to mount ,sturdy. It is great to have the Allen wrench in the case to mount and tighten" Read more

121 customers mention121 positive0 negative

Customers appreciate the value of the aiming scope sight. They say it's a good product for the price, and is an inexpensive way to outfit your 2A.

"...Also after using the precise flip. Great price for both. Adding some glow in the dark features on the dots will make it better I believe." Read more

"...glow when there uv from the sun they are very good quality and very affordable" Read more

"...Fine for the money, but if you’re a serious shooter do yourself a favor and spend the dough on the real deal." Read more

"...Overall an inexpensive way to outfit your 2A." Read more

118 customers mention105 positive13 negative

Customers like the performance of the aiming scope sight. They mention that it works well, holds zero, and is high end. Some say that it's handy and a nice back up to red dot sights.

"It's great overall. Love the red and green dots. It's easy to attach and easy to use...." Read more

"They are very good and glow when there uv from the sun they are very good quality and very affordable" Read more

"...I got them to be (temporary, budget friendly, back-up irons) they work pretty well and let me get lead on paper consistently so..." Read more

"It works well for 25 yard targets" Read more

100 customers mention100 positive0 negative

Customers find the installation of the aiming scope sight to be easy. They mention that the fiber optics easily draw the eye, and the installation was smooth. Some appreciate the convenience and great look of the product. Overall, most are happy with the ease of installation and use of the sight.

"It's great overall. Love the red and green dots. It's easy to attach and easy to use...." Read more

"...They were easy to install however, and even come in a small, branded case with the hex key included...." Read more

"Easy to mount ,sturdy. It is great to have the Allen wrench in the case to mount and tighten" Read more

"Solid sights and easy to install" Read more

44 customers mention44 positive0 negative

Customers are satisfied with the fit of the aiming scope sight. They mention that it is well-made, fits their rail perfectly, and adjusts perfectly to their specific head positioning. They also say that it's easy to install and adjust with a tool.

"...They stay on securely, are metal not cheap plastic, and are easily adjusted with the use of a tool (sold separately)..." Read more

"Sights are well made and fit well. A day at the range will tell if they are accurate." Read more

"Fit perfect on picatinny rail for AR type platform. Personally, I think they should draw light better but they work fine" Read more

"Fits and works as expected! Won't be disappointed" Read more

42 customers mention34 positive8 negative

Customers like the fiber optics on the aiming scope sight. They say it's an awesome feature, it draws the eye, and is bright in the sun. They also say the optics help put you on target and work well in outdoor settings. Some customers love the optional fiber optic view and like the red and green fiber optic.

"They are very good and glow when there uv from the sun they are very good quality and very affordable" Read more

"Received these today and mounted them. I love the optional fiber optic view and will use it...." Read more

"...The fiber optic works well in sunlight, OK in indoor light, and poor in darker lighting, but that is expected...." Read more

"This is an awesome fiber optic sight from Feyachi!! It looks really nice on my AR build. The flip up feature is perfect and operates well...." Read more

37 customers mention14 positive23 negative

Customers are mixed about the adjustability of the aiming scope sight. Some mention that it's easy to install, has little adjustment needed, and is completely adjustable for windage and elevation. They say the windage adjustment is consistent, but they're unsure of the MOA/click on it. However, others say that it doesn't have sufficient post adjustment, is very difficult to adjust the front sight, and that you can't adjust elevation without a wrench.

"...Biggest con (and not a huge one) is the front site can only be adjusted in 1/2 turns instead of 1/4 turns due to the fiber optic...." Read more

"These sights are made of medal and adjustable for windage and elevation. Appears to be durable but only time will tell." Read more

"Fayachi sights are good but you can’t adjust elevation without the wrench the ones online won’t fit you have to go to Fayachi website and buy the..." Read more

"...There's no easy way to make necessary adjustments.Other reviews mention special tool needed for that.I didn't use any special tool...." Read more

35 customers mention5 positive30 negative

Customers are dissatisfied with the flipping of the aiming scope sight. They mention that the front sight is angled to the left, the front post is not straight, and the rear sight does not lay completely flat. Some say that the rear sights don't stay straight up after each shot.

"Ordered 2 but ONE of them the front sight was canted to the left (not a lot) but still noticeable...." Read more

"...While trying to bring it up higher, it immediately sat on one side, kind of lose, rocking from side to side when touched by hand, felt like it is..." Read more

"...Also these are not spring loaded, you need to manually flip them up and down.For the $27 I paid, they work good and hold zero...." Read more

"...they don't "flip up" failed to read the description: they must be manually flipped up(no spring assisted pop-up)." Read more

Quality reflects the price
4 Stars
Quality reflects the price
For back up irons they are decent. Just some things to note, the rear sight doesn't fold down completely with the large aperture but will fold down on the small aperture. My front sight post has the slightest cant and fiber optic not perfectly center. The wear on the rear sight locking pin was from just 1 outing.
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Top reviews from the United States

Darrien
5.0 out of 5 stars Iron sights
Reviewed in the United States on April 5, 2024
Color: BlackVerified Purchase
It's great overall. Love the red and green dots. It's easy to attach and easy to use. The dots are like a crystal material not painted on which is great for target acquisition. Also after using the precise flip. Great price for both. Adding some glow in the dark features on the dots will make it better I believe.
2 people found this helpful
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Miguel
5.0 out of 5 stars Great iron sights
Reviewed in the United States on March 8, 2024
Color: BlackVerified Purchase
They are very good and glow when there uv from the sun they are very good quality and very affordable
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Jonathan Elash
4.0 out of 5 stars Good, budget irons.
Reviewed in the United States on November 27, 2023
Color: BlackVerified Purchase
The red dot inserts on the front post are only on 2 sides, and the dark paint?/coating? is already coming off in places even after only a few trips to the range. The Feyachi branding could do with being either half the size, or stealthed out as it's massive (a little black electrical tape solves this though).

They were easy to install however, and even come in a small, branded case with the hex key included. They stay on securely, are metal not cheap plastic, and are easily adjusted with the use of a tool (sold separately)

For what they are, and for what I got them to be (temporary, budget friendly, back-up irons) they work pretty well and let me get lead on paper consistently so...
4 people found this helpful
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Rick
5.0 out of 5 stars Well made and sturdy
Reviewed in the United States on April 2, 2024
Color: BlackVerified Purchase
Easy to mount ,sturdy. It is great to have the Allen wrench in the case to mount and tighten
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steven benson
5.0 out of 5 stars Better than expected
Reviewed in the United States on March 28, 2024
Color: SandVerified Purchase
Solid sights and easy to install
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LVDesert Rat
5.0 out of 5 stars Good value
Reviewed in the United States on February 23, 2024
Color: SandVerified Purchase
Sights are well made and fit well. A day at the range will tell if they are accurate.
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Shawn
5.0 out of 5 stars Wow - nice sites
Reviewed in the United States on February 7, 2024
Color: BlackVerified Purchase
Received these today and mounted them. I love the optional fiber optic view and will use it. I still have to sight them in but I must say - they're rugged, they're nice looking, and I can see right through my red dot no problem. I would definitely recommend these at this point. I'll update after I zero them in.
3 people found this helpful
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Thomas L. Bonnett
3.0 out of 5 stars They’re okay.
Reviewed in the United States on September 22, 2023
Color: BlackVerified Purchase
My opinion is similar to other people’s. You can’t exactly expect the highest-quality sights at this price point, but I knew it going in. I’m not an optics guy, I’ll never spend a thousand bucks on a sniper-level optic, and frankly the factory iron sights on my other AR are my absolute favorite. Rustic and ridiculously accurate. These? They’re okay. I won’t win any target-shooting awards with them and they wobble around a bit, but these sights combined with the built-in accuracy of an AR pretty much guarantee I’ll hit the target on my own lane rather than the guy’s next to me, which is enough for a hobbyist like myself. Fine for the money, but if you’re a serious shooter do yourself a favor and spend the dough on the real deal.
6 people found this helpful
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Top reviews from other countries

Chris
5.0 out of 5 stars Works well but, wish the tool came with it.
Reviewed in Canada on January 20, 2024
Color: BlackVerified Purchase
Sturdy build. No slop in the sights at all. Easy to deploy and tuck back down. I wish it came with the front sight 4-prong tool though. All good, I use a pen to make the front sight adjustment. Otherwise, solid and easy to zero. They are back up sights for if/when my red dot sight goes down.
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Emre G.
5.0 out of 5 stars Good Product!
Reviewed in Canada on March 23, 2024
Color: NickelVerified Purchase
Good Product!
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Erik
4.0 out of 5 stars Very ridgid when deployed
Reviewed in Canada on September 6, 2021
Color: BlackVerified Purchase
Surprisingly high quality. Very ridgid when deployed. The only critasism other then the logo being ridiculous is that I wish it had a bit of a tacktile click into fold down position. It doesn't seems like it could deploy by mistake, but would have been nice to feel it click into down position, not nessessarly locked in down position, just semi locked that could still be manually flipped up easily. Also, package should include the front sight adjustment tool. With all that said, overall one of the best budget back up sights available. Would definitely recommend to others.
7 people found this helpful
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lngram
5.0 out of 5 stars Works but be careful with it.
Reviewed in Canada on April 10, 2023
Color: BlackVerified Purchase
The good thing about it is the price and that aluminium. The problem is you can't adjust the front sight easily as the "tool [is] not included"
So I figured out that there is a spring keeping the sight locked and that pressing it in released the hold. Unfortunately trying to rotate the sight for elevation does not work well bare hand and using pliers risk slipping into the sight like I did. Most alternative sights have a horizontal turning dial, I'm not sure why Feyachi couldn't include a tool. 2023/04/16 - Feyachi reached out and replaced it. Good as new. My advise, but a sight adjustment tool on Amazon. This sight needs a 4 pronged one.
Customer image
lngram
5.0 out of 5 stars Works but be careful with it.
Reviewed in Canada on April 10, 2023
The good thing about it is the price and that aluminium. The problem is you can't adjust the front sight easily as the "tool [is] not included"
So I figured out that there is a spring keeping the sight locked and that pressing it in released the hold. Unfortunately trying to rotate the sight for elevation does not work well bare hand and using pliers risk slipping into the sight like I did. Most alternative sights have a horizontal turning dial, I'm not sure why Feyachi couldn't include a tool. 2023/04/16 - Feyachi reached out and replaced it. Good as new. My advise, but a sight adjustment tool on Amazon. This sight needs a 4 pronged one.
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Customer image
6 people found this helpful
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D.G.T
5.0 out of 5 stars Fits the 22 nicely
Reviewed in Canada on April 11, 2024
Color: SandVerified Purchase
Easy to assemble and use. Love the flip down option
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