Ade Advanced OpticsCrusader RD3-009 Red Dot Reflex Sight + Optic Mounting Plate for Ruger Security 9 Pistol + Standard Picatinny Mounting Plate

Great optic sight. Clarity. East install.

Pay what you paid for, cheap,not functional good after first shoot it turn off automatic, have to turn on again, look good at outside, but not accuracy, red dot not stable, and red dot is blurry, fix good for my security 9 but not worthy, don't buy it the Ade product.

Have used it on 2 different hand guns and a rifle. Holds zero okay, still needs tweaking ever other range visit. Worth the money imo.

I have managed to mount to my ruger security 9 compact with the plate that was sent with it made just for my firearm. Pretty easy. After I mounted plate I used a small bubble level to make sure it was level . The instructions were not that good but I watched a few videos to help me figure it out. After putting the optic on and turning it on I had to play with the wind age and level screws a little before the red dot came into view. Now I am just trying to zero it out . I might need a shim for the back to level it out better. But the dot is bright and it seems to be exactly as described. I am not sure how to use this plastic dial that came in box , they did not send any directions with it. The instructions that came with are not that great. So you might need to watch videos . Going to range to try it out..

Like others have said mounting plate for security 9 very tight fit. Windage and up/down adjustment seem to do nothing. Going to see if I can return. Waste of money

Came in well packaged , directions were easy to follow, mounting plate did not fit easy , made it work though and I’m overall happy with the product

It was hard getting the mounting plate on the gun but the red dot looks good!

Very bad 👎👎👎