Ade Advanced Optics RD3-006B GREEN Dot Reflex Sight Pistol for + Optic mounting plate for HK USP Tactical 9mm 45ACP 40 SW

The accuracy of the sight is excellent and it required very little adjustment when I mounted it on my USP. The dot is bright and easy to see, and overall the optic works well. My only issue so far has been with the battery connection. After a few shots at the range, the sight briefly stopped turning on and I had to remove the battery cap and reseat the battery. After adjusting it, the optic worked again.

For the cost of this optic, I honestly expected compromises—but it performs very well. The housing is sturdy, the dot is bright, and the adjustments are precise.

This optic has made shooting faster and more intuitive for me. The green dot is extremely easy to pick up and the sight window provides a good field of view.

I’ve been running this optic on my USP .45 for a few months now. I estimate I’ve put around 1000 rounds through the gun with the sight installed. It has held zero the entire time and I haven’t experienced any issues with the electronics or brightness settings.

The dot appears sharp and easy to track when moving between targets. Shooting drills at the range became much faster compared to using iron sights. For the price, this optic performs far above expectations.

Everything fit snugly and securely. After tightening the screws and adding a little thread locker, the optic has stayed perfectly stable.

The dot size is just right—not too large but still easy to pick up quickly. The brightness adjustment also works well for indoor and outdoor shooting.

I mounted this sight on my full-size USP 9mm and it has performed flawlessly so far. The dot is bright and clear, and the adjustments are easy to make. After around 500 rounds, the optic has held zero perfectly. The housing seems durable and the glass is surprisingly clear for an optic at this price.

This was my first red dot optic for a handgun. Installation took about 10 minutes and I was able to mount it without any special tools. What impressed me most was how quickly I adapted to using a dot instead of iron sights. Target acquisition became noticeably faster after a few range sessions. If you're new to pistol optics, this is a great way to try it out without a big investment.

I chose this sight specifically because it uses a green dot instead of the typical red. For my eyes, the green is significantly easier to see and track when transitioning between targets. Mounted it on my USP .40 and took it to the range the same weekend. After dialing in elevation and windage adjustments, I was consistently hitting steel plates at 25 yards. The optic body feels solid and the adjustments are precise. Overall a very enjoyable upgrade.

I bought this sight mainly because I wanted to experiment with a pistol optic on my USP 9mm without spending hundreds of dollars. I honestly expected something mediocre, but I’ve been pleasantly surprised. Installation was straightforward and the included tools were helpful. The green dot is crisp and easy to pick up even in bright outdoor conditions. The glass is clearer than I expected and doesn’t distort the target. After roughly 600 rounds, the optic is still holding zero and the battery life has been good so far. For a budget optic, this performs extremely well.

I installed this green dot on my HK USP Tactical .45 and it has completely changed the way I shoot. The mounting plate replaced the rear sight easily and the optic itself feels very solid for the price. The green dot is extremely visible in daylight, much more than the red dots I’ve used before. I was able to zero it within a few magazines at the range and it has held zero perfectly since then. The sight window is large enough to acquire the dot quickly and the brightness settings are very useful depending on lighting conditions. I especially like the front-mounted power button—it’s easier to reach compared to other optics I own. For the price point, this is a fantastic optic. If you own a USP and want an affordable way to add a reflex sight without milling your slide, this is a great option.

The accuracy of the sight was excellent & required little adjustment. My only complaint, so far (I've only taken it to the range once), is that the battery doesn't stay connected and I had to take it apart & fiddle with it after only a few shots - then it wouldn't turn-on, no matter how much I played with it. So, is it the battery connection, or something else. Later, at home, I got it to come back on. I'll take it to the range again soon and we'll see.