Ade Advanced Optics RD3-006B-2 Green Dot Reflex Sight – 3 MOA Reticle, 5 Brightness Settings, Fits Doctor/Venom/Fastfire Footprint, Includes Picatinny Mount – Compact Pistol Optic for Handgun Slides

I've only put 50-ish rounds through it so far but it was easy to zero and stayed zeroed throughout two trips to the range. It hasn't made me a better marksman, but has eliminated several excuses.

I purchased for my colt/Walther 22 caliber rail gun. I could not get it sighted, and contacted the manufacturer. They sent me a tapered shim and all seems Ok now. Love this sight.

Works great, green dot is clearly visible. Going from iron sights to this is amazing, much better sight picture and tighter group.

Mine as well spend 40-50 more and get a cyclee wolf. This thing doesn’t zero what so ever. My optic never shuts off just stays on. When I first ordered I got a box with everything but the optic lol they did replace it but still how?😂 Pros It Looks good The Dots bright I got the DPP mounting plate and it sits very clean Works ok if you don’t care if it’s in 24/7 Not really worth the $75-85

It's a pretty bad made red dot! Impossible to zero in, that screw on top it's moving freely, i can easy spin it with my thumb, so each shot will spin it up and down! And it's not my first red dot, i know that i have to lock that screw with the other ones in the back, but anyway doesn't help! Save your money and get something better!

Works great. Holds zero. No issues

The sight itself doesn’t seem bad for what it is, it’s a cheap pistol sight and that’s what you get. However it does not fit my PSA doctor cut slide, if you read the instructions it just says if it doesn’t fit use a razor and cut the plastic around the button to “make it fit”. Decided I’d just spend a bit more and get something of higher quality.

This was my original ADE red-dot, and I just received a 2nd for Christmas. The original is on my HK VP9 and I love it, so after finally finding a mounting plate for my S&W 686 revolver (which previously required a picatinny rail to mount), I asked my wife for a 2nd to replace my bulkier DD red-dot. To the surprise of my friends (and critics) who assured me that the "cheap red-dot" would not hold up like their high priced ones. Extremely reliable, holds the settings, no affected by recoil, great battery life, etc, etc. Proof that "inexpensive" does not mean cheap. Get's my highest recommendation.