Good low cost red dot sight!
594772
I have the Field Sport Red and Green Reflex on a S&W 22A 1 and it works great.
An easy to replace battery makes it handy to replace.  Holds dot on target. I've
shot over 100 rounds with it and have not had to reset the dot yet. I bought a
second one to put on my H&R 12 gauge shotgun. I will use it mostly for turkey
hunting and target with 9mm bore adapter. Solid product.
3023490
Really nice sights for the price. my only complaint is mine came with very minor dings and nicks on them, but nothing to get upset about. very good product so far!
1181654
Not a bad little sight for the price. It's well made and if your weapon has the rails, a very easy set up. I'd buy it again.
3495371
Nice red dot sight, appears to be made well for the price point.  Fit and finish is good. Red dot clear and bright. Only reason I did not give it 5 stars is because the add states that it comes with a high amount, it does not, it is sold separately.
3220451
Very nice red dot for the price.  Fast target acquisition thanks to the t reticle.
4657084
Not a bad sight for the price. Easy to use and install fits pretty snug. well built and easy to use.
1048720
Great sight for the price. Had some trouble zeroing it but once i got it zeroed it worked great. Love the choice of reticles and color but just wish it had an on/off switch instead of having to remove battery.
2513811
Great little  sight for the money, would definitely recommend to others.
3813831
Great red dot sight (rds). Dot is clean and bright. Mounts easily, although I did have to tighten the front lever.  Wide field of view, wider than the 30mm rds I had on my rifle.  Controls are easy to use and uses a readily available AA battery.  Durable matte casing.  Comes with a lens cleaner and nylon scope cover.
3306246
For the money you just can't beat this sight. Mounted easily and sighted with no issues. Battery lasts forever. I didn't know if I wanted to go scope or red dot so I got this for my AR to see what I wanted (already had a small scope). I think I'm going to keep using the red dot. I plan on getting one a little more higher quality in the future. But for now, this thing is great.
4774863
It's good for what it is-which is a $20 red dot.

I used this when testing a new gun and it served its purpose, and held up to .50 beowfulf recoil for about 40 shots without falling apart, so I was happy with that, I wouldn't leave it on there long-term, but it worked fine for one range session until I can get something more sturdy long term.

Mount is extremely low profile, like uncomfortably low. Manufacturer should include some sort or riser, which is why I only gave 4 stars.
1998966
Great little red dot for the money. Make sure you use blue loctite if you're going to run this thing hard. Came a little loose in a class but didn't lose zero by much. It does have a slight halo effect when you turn it really bright but it's great and slim. Built in caps that lock into themselves are sweet! I will probably buy another. This is my 4th vortex optic.
4576681
It arrived quickly and nicely packaged. It's no Eotech, but it is also a small fraction of the cost. If you are just looking for something to put on your first AR flat top or plinking gun, this is a good buy. I wouldn't use it in a life/death situation long term, but it can put a hole where you point it just fine in a pinch. Holds zero as well as expected for a $50 red dot. I give 4/5 because the battery cover threads could be a little tighter to where you don't accidently loosen when trying to adjust brightness. Teflon will take care of that.

Side note,turning the knob to 0 is what turns it off.
4585219
Works well on my AR with .22 LR conversion. The dot is very small, it can be hard to see in bright sun and slow to pick up on fast maneuvers.
You can see how small the dot appears about 3 o'clock in the close up picture.
2210459
The site itself seems pretty solid. I like the choice in reticules and green/red option. I don't like the way it mounts, it's a bit kludgy and would have preferred a slide over style with a single pass through bolt to secure it, this why I'm giving it a 4 of 5. My flip up sites clear the unit and pass through the view finder without issue  as well.
For the price it's hard to beat, and worth a try in my opinion before you decide to put out a few hundred dollars on a big name red dot.
4973340
Nice sight for the money. Had some ghosting of the dot at first but that disappeared after a little bit of use. Nice housing and performs very well. Holds zero through 300 rounds.
2106160
This is a great site for my S&W MP15-22, and the cost is remarkably low!!  I interchange this with a scope and have no problems with either one keeping the "zero".  I have used this both indoors and outside and do not have ONE complaint.  This sight is easy to install, use and maintain.

I highly recommend!