I was excited to get this right up until I turned it on. The red dot was crazy blurry, but I gave it the warm up time the company suggests, because we all know we always have time for that right?, but even after said time it was still horribly blurry. I decided to go ahead and take it with me anyway and see what I could do with it at close range. Got out to the range and got ready and… no dot at all, I changed the battery just in case it was an issue with the original battery being dead. Nope, no dice, no dot, no nothing. It was dead before the first shot so I can’t say if it holds zero, how it does for battery life, or how well it adjusts for zeroing. All in all I had high hopes from what I’d read but don’t waste your money, the price is enticing but the product was useless

Overall I am happy with this sight. It's very clear and does what I need. But I'll add some comparison notes between this one (RS-20?) and the RS-30 (which is referenced as a newer version of this one). I bought both. Haven't tested on the range yet so can't speak to holding zero but many YT vids reference both hold well.Differences: - This one has green and red reticles, RS-30 has only red. - I prefer the push button over the knob to turn on and adjust brightness (on both). - This one has slightly smaller view, though both are listed as 40mm. I'd say this one is more like 36mm. - The biggest difference is this one reflects other light more so if you're in the sunshine (or other bright overhead light) you'll see a reflection from the back part of it (including the "OFF" and "UP" words). I'll probably cover, scruff and/or paint over it so it won't be so shiny. - Additionally, the cavity where the LED is, reflects the light coming from the LED so you'll see a faint circle and square around the reticle. More pronounced on green than red. And more noticeable on brighter settings. - On the RS-30, a faint square reflection only shows up on the 2 brightest settings. - The RS-30 also has an orange hue on the lens. I suspect this was an extra coating to help reduce the reflection. And looks cool (in my opinion) like the orange coating on some sunglasses. - The only other reason I got this one was to also get the 45 degree mount, but that can be ordered separately as well.Hope that helps for those deciding which to get.

Works really well and is easy to sight in. I have it on the 45 drop adapter on my carry handle top rail. Had to put a thin plastic shim in to take out the slight wobble, but I think that's more the rail than the adapter because it was fine on other pic rails.

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This optic feels like its made with solid contruction, red/green switch is easy to use and quick to activate. The reticle appears very sharp and bright. Used for airsoft application, and I woupd buy another feyachi optic for this purpose.

Using this for airsoft I was not expecting to receive something of that quality for the price .really happy the dot is really bright ass well perfect for inside or outside game

I was a bit skeptical buying this sight given its only $40, but I thought I would give it a shot with all of the positive reviews it had. This sight is everything I wanted and more. First off, I'm pretty bad colorblind so most red/green dot sights are hard for me to see especially during the daylight. I was hesitant about this sight because I wasn't sure if I could see it in the daylight... That wasn't an issue with this sight. I could see all 4 reticles perfectly. This sight is very bright and easy to see which is the biggest problem I've been running into with many red dot sights. So right off the bat this sight had two thumbs up. It's easy to install plus it came with an extra set of batteries. The sight itself feels very well made and very sturdy which is really good given the price. I have not had a chance to shoot my ar15 since putting this sight on, but it was already sighted in for the most part when I put in on my Ruger 556. It doesn't need a picatinny riser either like most red dot sights. Overall, this sight deserves 5 stars for the price, quality and brightness. It's one of the best sights out there for the money and I will be recommending this sight to anyone that wants a quality sight that won't empty your wallet.

Many of us have heard the expression “You get what you pay for.” Getting what you pay for can be true, as can: sometimes you get less than you pay for, sometimes you get more. Each of these sites are the latter.My first portion for testing this sight was by mounting it to a tactical 12 gauge shotgun; this will give the jolts and high recoil impact that I am looking for. Sights often can be loose or loosened by recoil – and a sight negatively impacted by this can be damaging to targeting. After mounting I fired 100 rounds; approximately 50 slugs and 50 buck shot shells. The recoil is pretty heavy; slugs were done first so targeting could be zeroed in; the last ten were also slugs to see if accuracy stayed. Keep in mind, these are shotgun loads so I did not get into tight MOA; it was merely to test whether or not the dots drifted greatly on the sight. The second portion of the test was to mount these to a target .22LR pistol (50’ targeting). This allowed me to fine tune and really see if the sight was adequate. I am not an expert in shooting, but in my semi-capable hands, the sights performed well. Approximately 150 shots were put downrange in this portion.On first view, I wondered what the point of the 45-degree mount rail was: my first assumption was it fit under the sight, but additionally I saw it was also an extra component to use elsewhere on the Picatinny system. The 45-degree allows another component, like a flashlight or laser to be mounted, or it can mount this sight so a scope on top allows downrange rifle shooting while the reflex sight is put in action by turning the rifle 45-degrees. It is a good benefit, but when a bright flashlight is mounted too close it may wash out the reticle in the sight itself. Be wary and test. Overall, though, the system mounted well, took the recoil and remained true to settings. One thing I did notice when mounted to the pistol: holding the pistol at a distance caused the reticle to blur and become large. In fairness, this system is probably designed for a rifle/shotgun setup so the reticle would be closer to the eye than an extended arm pistol. When the pistol was fired in a combat style, the reticle was perfect. The ability to adjust size, color, and shape was also a nice touch and allows for personal preference of the shooter. Changing colors, sizing, and reticle types was super easy and the field of view was excellent – especially when mounted to a tactical shotgun.This is definitely a worthwhile investment. The quality of this sight is well-above the price paid. The components were pretty solid for this price point, too. At first, I was worried about the mount screw as some of these components might be "cheap". Once I realized this was a trustworthy mount I attempted to over-tighten and see if I could snap the screw head off, as I had done on my last sight. Well, I was pleasantly surprised to find out this could not be easily done!Definitely a worthwhile investment.

I bought this to use with my CAA Micro Roni Stablizer and it works great. There are lots of reticle options in both red and green. Most importantly it holds zero.My only complaint would be the laser splash onto the lens at higher level intensities and the lens is very subseptible to sun glare.But hey, what do you expect for $34 :)

This is a nice sight. It is durable and compact. I mounted it on a Ruger Mark IV handgun. It easily attached to the picatinny rail. It is not necessary to remove the iron sights but you can if you want to. There are four reticles: a single dot, a dot inside a circle, a crosshair and a circle with crosshair - all available in either green or red color. When I first installed the sight (at my house) the reticles were blurry. But when I went to the gun range they all looked fine at both indoor and outdoor ranges. Must be something with the lighting at my house? I sighted in the gun/sight using sand bags. My first shot hit 11 inches low, so I had to raise the point of impact quite a bit (Note: I did not bore-sighted the gun first). After adjusting elevation and windage I was shooting a nice group at 50 feet. The sight has a sight adjustment locking screw . The locking screw must be loosened before adjusting the windage and elevation. Then tightened after adjustents are completed. The sight is powered by three LR44 batteries (six batteries were included with the sight). The brightness of the reticles is adjusted by repeatedly pressing the ON button. Since I installed this sight I have shot over 400 rounds and the reticle is still on target. I was concerned that the reticle may drift, but so far it is still on target. The instructions that came with the sight were on a single sheet of paper. One side described the sight and provided instructions for the battery, mounting, and zeroing. The other side had three diagrams of the sight showing all the features (battery cover, adjustment screws, etc.). So far, I am satisfied with this sight.