RD3-006B Reflex Dot Sight with Picatinny Rail Mount – Compatible with Doctor / Vortex Venom / Burris Fastfire Footprint – Compact Dot Optic, Green or Blue Dot, Black or Tan

Great buy, works perfectly on my Glock 17

Great product looks nice and quality and works great i like how the green dot can switch with the dimmer button

First of all, I'm new to firearms. Less than a year. Have plenty of military and LEO friends who provide a wide range of advice and experience. That said, all discouraged me from "cheap" or "inexpensive" optics, such as the ADE brand. I watched several videos, read several reviews on this particular model (RD3-006B) and the evals were mixed. Decided at the price point, it would be a fine experiment. Green is easier on my eyes, hence this model.Installed a DPP titanium rear sight dovetail adapter on a Glock 19 with the included Loctite blue on the screws. Installed the RD3-006B on it (I don't think I used Blue though...) Zeroed it with a bore sight laser at 7. Made sure the elevation and windage screws were tight. Took it to the range (only have indoor in the area that's affordable for me). After 100 rounds, it held zero. After the second hundred, it had moved up just a tiny bit, I almost could not tell. Still able to put shots where I wanted well within a 3" area. Another 100 rounds and the elevation change was more noticeable. Still had shots acceptably were I wanted. Re-zeroed and fired strong hand, less accurate, but still pretty close to where I wanted. Fired weak hand...let's just leave it at that....Finally, for fun, sent it down 25. I can't see that clearly at that distance...but put 7/10 on the paper. Less of those were even close to where I wanted, but that's NOT the fault of the sight of course (nerf aging). All in all, for me, I felt it performed well for what I paid. I should recheck if I used Blue when mounting it into the dovetail adapter as that could account for the slight elevation changes. Never needed to touch the windage adjustment during use.The dot is easy to see. The adjustable brightness levels make is easy to find a comfortable brightness. I don't like the power button on the front, but that's a personal preference.Point is, be honest with yourself about your expectations. If you buy this at $70-ish dollars expecting the quality and performance of a $200+ Holosun, Sig, or a "Brand Name X" , YOU WILL NOT GET IT. If you buy the RD3-006B understanding it's NOT "Brand X" and will NOT perform as "Brand X" but WILL get the job done with maybe an occasional need to re-zero (a tiny bit), you won't be disappointed. In a year, with more experience, my view may change. However, with my limited experience with firearms NOW, it's a good buy in my opinion and I'm keeping it.

I wanted a green dot optic with this footprint for a Ruger Mark IV on a particular mount. The Ruger Mark IV doesn't have a slide like a traditional automatic pistol, so I figured even if it was not up to par for those, how bad could it be on a non-moving slide firearm?Here's what I learned while wasting my time with this piece:1. The dot is definitely not a 3MOA dot, more like a 5 or 6. There is only one acceptable brightness level. The first is too dim, and three and thereafter are way too bright. They bloom, if you know what I mean.2. It randomly shuts off after a few rounds. What? where's the dot? Tried to get the thing back on and no dice. I'm at the range and am now swapping my upper with a Holosun attached to it. Now that optic has never given me problems, even after thousands of rounds.3. You have to uninstall it, remove and reinsert the battery, reinstall it. Get out the threadlocker, here we go again. After reinstalling it, I could not get it back on. Let's try it again - finally have a dot.4. Back at the range, fire a few rounds, and right back to where we started.A few other notes:This would be terrible as a carry optic. You'd have to have it on at all times. there is no wake feature. And imagine if it just wouldn't turn on?It's very difficult to acquire the reticle.There are no clicks when setting the elevation and windage. There are set screws that you must loosen to set those. Then retighten, and if you don't, be prepared to re-zero this thing.If I were you, I'd pass on this.The price and look were alluring, but don't be fooled.

Easy to install.Odd on/off area for switch.Lower illumination, perfect green dot, Highest setting has a little spike to the upper left.I do like the unit, after 100 rounds will update.Just a target sight for a Glock (had to move sight to the right so far it looked odd).I will say a good buy.3 inch 6 inch plates go down 10 ring constant hits10, 15, 25 yards, yahoo.

Good while it lasted, didn't make 1000 rounds on my CZ 75.

This Optic was a direct mount on a Doctor cut PSA Dagger Compact. After direct mounting the site using the rubber dampener then the optic on top, laser sighting it in and locking down the windage and elevation screws I'm happy to report 200 rounds later of 124 grn 9mm grind hard ammo the site works perfect. Never lost zero or malfunctioned, and It does co-witness with iron sites. Very surprised for the price this thing even worked and the brightness levels are perfect. I highly suggest using the supplied rubber mount and be sure to tighten down the windage and elevation screws after sighting it in. Just ordered another one for my other PSA Dagger Compact Doctor cut build. Cheers.