| Mounting | Picatinny rail, Weaver rail |
| Brightness | 5 levels |
| Reticles | 4 different reticles to choose from |
| Weight | 5.4 ounces |
| Length | 3.7″ |
| Magnification | 1 x 40mm |
| Material | High-grade aluminum alloy |
How I acquired the sight
While I already had a red dot sight on my AR-15, it did not line up with my iron sights. So I figured I’d try this co-witness reflex sight from Feyachi. I found it on Amazon for under $50. And since Amazon is great about returns and exchanges, I figured what do I have to lose?
The box included: the Feyachi RS-30 sight, 2 hex tools, 3 LR44 (AG13) batteries, and a lens wipe. The batteries are basically extra’s since the sight already comes with batteries installed! This definitely surprised it since most sights neither have batteries installed or come with batteries.
Installation was a breeze on my AR-15’s 20mm Picatinny rail. It also accepts weaver rails, by the way.
I unscrewed the two hex screws with the Allen key it came with, placed the sight on the rail, and tightened them. That’s all it took!
I wasn’t sure if I would still need a riser, so I was happily surprised how this sight basically has a built-in riser. It has another hex screw on the top of the sight. Turning this clockwise raises the sight’s back, aligning the co-witness feature with your front iron sight. Why is this important?
It allows you to line up the reticle from the reflex sight, exactly with your front iron sight. Not only does this speed up target acquisition and accuracy, but it also allows you to use the sight even if it malfunctions or if the batteries die. While you wouldn’t necessarily want to use it this way, it’s a great fallback for emergencies.
While some sights feature 10 or more brightness levels, I’ve always found this a bit unnecessary. The 5 brightness levels this Feyachi reflex sight comes with are perfect. It starts barely visible, great in dark situations. Then it gradually goes up to number 5, which is super bright. This makes the reticle visible in the brightest situations, like on a bright sunny day. The three brightness levels in between cover just about any additional lighting situation.
As far as the reticles, I usually prefer a red dot. To quote Mel Gibson in The Patriot, “aim small, miss small.” Sure he was referring to aiming for a small area, like a button on a coat, rather than the chest. But I feel the same goes for reticles. A red dot offers less distraction and lessens the aim area of your target. But that doesn’t mean the reticles aren’t cool! It definitely adds the shooting game customization feel to your AR-15. And who knows, perhaps a certain reticle will prove beneficial in certain conditions or for certain targets.
The 40mm lens offers a wide view, which is great. My Bushnell TRS-25, for example, offers a 25mm lens. While I love the Bushnell sight on my .22 rifle, I prefer the wider view of the Feyachi on my AR-15. I feel like the 40mm lens allows you to switch targets faster since less of your peripheral view is blocked.
Like most high-quality sights, the lens is multicoated. This helps to reduce sharp light and glare in your eyes dramatically. It also provides a fog-proof coating, something you would definitely appreciate if you shoot outdoors on a warm day or humid day. Even in a cool range, if you’re sweating, the lens can get foggy if you’re close to it. You won’t have that problem with the Feyachi RS-30.
While you could mount the Feyachi RS-30 on any firearm with a Picatinny or Weaver rail, I think it’s perfect for an AR-15. The co-witness feature is ideal for firearms with a longer barrel and iron sights.
This red dot sight isn’t low-profile; it’s intended to be raised off of the firearm so you can combine the reflex reticle with the front iron sight. That being said, it feels too high when installed on a shotgun or handgun, for example. It would much rather have a low-profile red dot for these types of firearms.
When writing this review, I have not yet had the chance to use the sight on the range. Once I use the red dot sight, I will update this review!
The Feyachi RS-30 reflex sight gives a big bang for your buck. It compares with similar sights that sell for 2 to 4 times the price. The durable all-metal construction, wide 40mm multi-coated lens, and 4 different reticles are all great features that make me love this sight. But what really seals the deal, for me at least, is the co-witness feature. The red dot reticle sits exactly on my front iron sight, and everything is aligned perfectly.
Thinking about picking up one of these for your AR-15? Not quite sure? Rest assured that if you have any problems with the sight or just don’t like it, you can return it hassle-free. In fact, Amazon requires its sellers to carry a 1-year warranty. This gives you ample time to make up your own mind and truly test this sight.
What is the moa for the rs-30? I will probably use on an AR for home protection around 25 to 30 ft
The Feyachi RS-30 has an MOA of 2 and has various reticles to choose from. The larger reticles like the bullseye may be beneficial for closer ranges, like home defense.
A larger reticle will help with closer and moving targets. You’ll spend less time zeroing in on a tiny dot for a relatively large target.
Hope that helped!
Hola. Do replacement batteries need to be in the sleeve or can they go in separately, aka 1-2-3?
Hey Dave, good question.
If you look at the photos of the sight above, you’ll notice there’s a large screw-type cover on one side. This cover unscrews and gives access to the batteries.
You can easily remove this cover with a screwdriver (or even with a bullet casing if you find yourself at the range and the batteries die).
There is no need to remove the sight from the firearm to replace the batteries.
Hope that answered your question!