HOLOSUNHE507C-GR X2 / HS507C X2 2 MOA Dot & 32 MOA Circle Open Reflex Pistol Sight - Durable Shake-Awake Solar Failsafe Parallax-Free Aluminum Sight for Full-Sized Handguns - Green & Red Dot Options

I purchased this to replace a Vortex Defender ST that has MAJOR design and hardware flaws.Do yourself a favor and spend the extra $40 bucks and avoid the headache and hassle.The 507c/407c series of optics just work, the buttons are easy to access and manipulate, but not easy enough to inadvertently access and change your brightness/settings like the Vortex. Smaller battery but double the battery life, if you can explain that one to me, more power to you.Holosun just makes a better optic. YMMV but for me, this does the job and does it well.Also, if you're on the fence about forking out the extra coin for the 507c with the "donut of d*ath" reticle over the dot on the 407c, consider this...1 moa is roughly the equivalent of 1 inch at 100 yards, so a 32 moa ring becomes a 32 inch circle, a 2 moa dot is 2 inches, and so on and so forth... But what about at 10 yards, 1/10 the distance? That 32 inch circle becomes a 3.2 inch circle, and that 2 inch dot becomes 1/5 of an inch.It's not going to make you a better shot by any means if your fundamentals suck and you don't practice, but when the adrenaline hits that ring is going to help you focus on that dot and make the hits count when it matters.Hope this helps.Also, side note, Holosun introduced a rolling change to their battery trays, the screws are now captured and "rachet", scared the living daylights out of me at first because I thought I stripped the screw but then I noticed that there's a ring around the screw for the battery tray now and after a little internet investigating, found out why.

Great tool. Have ordered multiple after using the first one. Like the solar charger as well as it coming on when you draw or move the firearm. Have it on 2 sig p320 x5 legion and will be adding to a new echelon. Did not need a plate or adapter to install on the sign, so that was a definite plus. We like the green version and that there are multiple options on the reticle/dot configuration.

Easy to zero. Very accurate and dependable. Makes target acquisition much faster for me.

Great product and excellent value for money

Great service great product

Awesome

Works as advertised

I've become a fan of holosun, but this sight missed the mark for me. I have several 510c sights and they work very well on my carbines and even shotguns. This i my first pistol red dot and its kid of a pain. The controls a very small and hard to use. I have a devil of a time turning the sight off and often have to hunt around to find the reticle. The Buttons are so close together i often have to use a tool or spent casings to press them. That being said, it is well made and hold zero even after nasty drop due to me fuddling around trying to turn the sight off.