"I wanted to buy a red dot sight for my new Beretta CX4 Storm airgun. I wanted a quality product under $100. I came across AT3 Tactical's RD-50 sight on Amazon and was impressed by the reviews. I then went to AT3 Tactical's own website and found about 90 reviews with virtually every one being a 5-star rating. And these reviews all had real people's names! Impressive. I had some questions about what height riser would work best with my gun. I e-mailed customer service on a Saturday night and got a reply from Zac on Sunday. (What other company answers e-mails on Sunday!) I had several other questions and all were answered just as quickly. I did buy the scope and I couldn't be more happy. It looks great, the dot is perfectly round and absolutely clear, the range of brightness is impressive, and the instructions for sighting it in were perfect. I was impressed (again) by the fact that the instructions indicated that each click of the height and windage adjustments would change the point of impact by 1/4" at 25 yards, which, coincidentally is the exact distance I shoot from. I sighted in the scope within 10 minutes. I had bought two different riser mounts and wanted to return one. I did so at AT3 Tactical's expense, showing they honor their 90-day free return policy. All in all, AT3 Tactical makes great products, and their customer service is second to none. I am delighted to leave this review and wish them tremendous success in the future. "