HOLOSUN 510C Multi-Reticle 2 MOA Dot & 65 MOA Circle Open Reflex Sight - Solar FailSafe Shake-Awake, 12 Settings - Red/Green Reticle

High quality and functional. No issues when in use. Long battery life, sweet shake awake feature and easy to use.

Wonderful, well built site. Solar back up power that works great. Easy to install and holds solid. Clear glass with easy to see reticle. Holds its zero well even after a lot of shooting.

Best green dot sight I own. Shake awake feature with auto on and off are the features I was looking for. I love the different reticle options and the green is highly visible. Holds zero incredibly well at 25 yds on my 9mm Pcc. Battery life is great with the solar fail safe just makes this an absolute must have for any firearm that allows for a picatinny mount. I would absolutely recommend this product.

Holosun is great and costs less than some competitors. You can't go wrong with their extended battery life and solar power. I have this on a shotgun. I didn't even need to make any adjustments; it fired straight and true right out of the box. My last optic was a true holo-sight; and it required a lot of adjusting. I should have purchased a Holosun back then.

I’ve been using the HOLOSUN HS510C-FDE-R Red Multi Reticle for several weeks now, and it has exceeded all expectations. Right out of the box, the build quality is impressive—rugged, well-machined, and the FDE finish looks fantastic on my rifle. Multi-Reticle System: The ability to switch between a 2 MOA dot, 65 MOA circle, or both is incredibly useful. It gives me flexibility for both close-quarters and precision shooting. Solar + Battery Power: The solar failsafe is a brilliant feature. Quick Detach Mount: The QD mount is solid and makes it easy to move between platforms without losing zero. Wide Field of View: The glass is crystal clear, and the sight picture is wide and unobstructed. Target acquisition is fast and intuitive. This optic is perfect for anyone looking for high performance without the premium price tag of other brands. It’s held zero through hundreds of rounds and rough handling. I’d absolutely buy it again.

This item was perfect. Just what I wanted. Makes my m4 complete. Easy to install, multi reticle, looks good.

As usual this Holosun sight is a great sight. The green reticle really stands out. I've got several of these sights with the red reticles and they're good and dependable sights. You can't go wrong with them.

Bought this sight in 2019 for $275. It is still working great. I have had some issues over the years with picking the optic up and it not being on. Im not sure if it was to do with the settings or what but I would think it was on auto off standby mode but I had to adjust it a few times before I could trust that it would just be on instead of being off because it was in one of the modes that the sight has that affects battery comsumption. So be aware of that if your using this for duty. It has clear glass and dot. It feels durable and has lasted well with being knocked around during normal use. Easy to install, just double check the mode settings before you set and forget. Love the look of it as not many other optics have this exact footprint. It has a look of its own like an eotech