Works okay, hard to calibrate as it's so small. Will probably go with a longer scope next time for better accuracy.

For the price it works fine!

Not a bad price and looks good.

This is a very good low budget reflex sight. I was pleasantly surprised that the sight stayed zeroed. I had no problems of fogging. The dot may appear slightly distorted but did not effect target acquisition. The picatinny riser mount is also a plus, because it allows line-of-sight to mechanical sights without removal.

A little wobbly at times but it’s good

I don't think you can find a better red / green dot sight for the price point. Fit and finish are excellent. Dot's work great and seem to hold zero. What more do you need? It's not a Sig Romeo 5, but not far from it in my opinion.

Keeps zero and easy to install and view.

Never really thought about having astigmatism or noticed anything was really wrong until I bought this lolThe optic itself is great, excellent build quality for the price and arrived a day early!I cannot use the green dot but the red is fine on the lower settings and my wife who has perfect vision says both the green and red dots are clear except on the brightest setting when they get a little bit funky but it's nothing really too bad. I mean anyone who buys an optic in this price range and complains about something as little as that are the same type of people that require us to have a hot warning on a coffee cup...

Only issue is that the site does not actually work for the green button. Whenever I press the green button it doesn't work. However the red still works fine. Little disappointed with that but otherwise it is a good site for a budget

The Hiram Green Red Dot Sight is a compact and reliable option for rifle enthusiasts looking to enhance their accuracy and target acquisition. With a 1x20mm design, this micro rifle scope offers a wide field of view and excellent clarity, allowing for quick and precise aiming. The 4 MOA reflex sight provides a clear and sharp red dot that remains visible in various lighting conditions, while the illuminated feature ensures visibility in low-light environments.Crafted with durability in mind, this sight is constructed from high-quality materials that withstand the recoil and impact of rifle use. Its lightweight and streamlined design make it suitable for various firearms, including rifles, shotguns, and even handguns, without adding excessive bulk or weight.Whether you're a hunter, competitive shooter, or tactical operator, the Hiram Green Red Dot Sight provides reliable performance and accuracy, helping you to hit your target with confidence. Easy to install and adjust, this sight is a valuable addition to any firearm setup, offering enhanced precision and versatility. Highly recommended for those seeking a dependable and compact red dot sight for their rifle.

Easy to install and easy to zero. After a couple of mags though started getting loose from the Phillip head screws coming loose on the high rise mount. Took it home and tighted them up and hoping they won’t get loose next time I go to the range. Btw one of the 4 screws were missing. Still feels like a sturdy build.

UPDATED FROM BELOW: Having tested this on my carbine now, here’s what I would add to what I wrote previously. Click adjustments are positive, and in the bright sunlight I could make out super tiny arrows designating which way to turn for wind age and elevation adjustments. Held zero perfectly. Brightest settings were OK in sunlight, especially green. Still consider it 5 stars for the money.PREVIOUS REVIEW:This has to be a limited review as I have not fired the Beretta CX4 9mm carbine with sight attached yet. I will follow up after a couple hundred rounds if there are any performance issues. Here’s what I can say: the sight is close to advertised, with a few things slightly different than pictured. The top buttons are not designated with red or green. The sight is labeled PINTY on the left side. There are no arrows or letters designating which direction to rotate turrets for right/left, up/down. Other than that, it seems to be built well and operation of buttons are positive and solid. Dot clarity seems excellent on red, if not overly bright. Green provides plenty of brightness but flares out a little more. All in all - especially considering the price - if this sight holds up to recoil as expected, it is a great value and meets the purposes for which it is intended. BTW, it is replacing the classic Bushnell TR25 that shorted out. I also own a Sig Romeo 5 and an Eotech. I would not compare the Hiram sight to either of those fine sights, but I think it is worth the money.

UPDATE: I decided to return both red dots. I'm sure the company may reach out, but I do not wish to keep using them. The units were not defective, and both held zero well. However, I used my own brand new Duracell 2032 batteries, and not the included batteries as some have said they are DOA. Even on the 7th click, brightest setting, outside they can be seen against a target or even the sky, but they're not quite bright enough for my purposes. I don't like running them at their max setting just to see the dot. Otherwise, they're good, if you don't play on using them in hardcore bright settings. My two cents. Otherwise, everything I've covered was fine with my two.This red dot review will cover only the initial stuff, and some questions I myself had, that seem to need clarifying or the manufacturer has made some positive updates. I WILL be updating the review once I have gotten some range time on it, and let people know if any issues arise. I did pay for this unit today, and it showed up within 2 hours, so good on Amazon for that speedy delivery. I opted for this unit as I just need a red dot, fast, and I know and like these economical red dots. I'm not deploying next week, and if you're into expensive gear, you're not reading this.So, I run good, economical red dots on my ARs. I have several, from the TWOD that looks a lot like this one, to a Fieldsport RED DOT ONLY or two, to the CVLife stuff, and they all seem to have mostly positive attributes.The main questions I had as I was reading these reviews earlier today, was saved last brightness setting, and auto off after 1 hour. I was sad when some were saying it did not, even though the TWOD, which looks nearly identical, does have those features.My Hiram unit I got today, does have last brightness setting remembered, but for both colors. Leave it at setting 4 RED and then turn it on next time for GREEN, and it'll be 4 GREEN, etc. Also, it does shut off after 1 hour of inactivity, as I've tested that feature over 3 one hour test periods. I did give the unit several sharp taps with my palm, to see if mine was 'loose' as some negative reviews have said. No issues.I will also, per some negative reviews, do my due diligence... And remove the mount screws with a properly sized (Yes, properly sized because the hardware with less expensive units can be softer steel, and too large or small a screw driver will screw you, pun intended) philips head screw driver and apply a touch of loctite to any screws that could work themselves loose. Yes, it should be handled my the manufacturer, but price vs features is the name of this game. A little extra work on your part, will make these economical red dots run well. Of every lower cost red dot I've run, I don't have zero shifting issues, and stuff doesn't work itself free over many rounds. Don't throw it at a tile or concrete floor, either. Main mount that it came on, and is on in my picture, tightened right up on my Aero upper, and any mil-spec upper won't have issue. Some aftermarket rails, however, can present issues. American made rails, not as much, but even some of my range guns have imported rails. Gently, crank the mounting screw down, but don't go nuts and strip the screw right out. You should get it to mount tight on any picatinny rail that isn't terribly small out of spec, by just tightening half past snug. Fire a few rounds, check it, and check periodically and you'll be fine.Lens coating is silver like the pictures, and doesn't darken the view much at all, but it does a tiny bit. My dots both red and green seem clear enough, and I have confirmed through several red dots, including an Aimpoint PRO, that I have an minor astigmatism that even presents itself in something like that Aimpoint PRO. Dot isn't splotchy beyond use, and that's typically not the unit itself, but our eyes.Mine came as in my picture, with the high riser, and the lower mount, and then the 3rd surprise light weight mount. Don't know if that was a fluke, but I'll TAKE IT. It also came with a battery, lens cloth and tiny wrench not pictured. I threw a Duracell 2032 I know is brand new in, to confirm function. Another smaller question I had with ambiguity in some reviews, I was happy to see it says and takes 2032s and not some obscure 2016 type battery.As I've said, I've run a lot of bargain red dots. You make sure a couple small things are good, and add a bit of loctite if needed, know how to really zero a specific weapon system and you'll be alright. If it's a duty gun or some such, then yeah, get an Aimpoint. I don't always review each red dot I get, but since I had some questions, hopefully this will help clarify what you'll be getting as of this writing time frame.