Holosun HE509-RD Enclosed Solar Powered Red Dot Sight w/ MOS Mounting Plate - ACSS Vulcan Reticle

This red dot is the the best red dot on the market hands down!!! No more searching for the dot or having to adjust your grip in order to shoot better it is the cheat code for red dots. Whatever you shoot at with this red dot you will hit for sure. Get one now.

Extremely happy with it so far! As time goes on and more rounds are shot I'll have to update but for now it looks and work perfect!

Have this mounted to a glock 40. Shot several hundred rounds of reduced-recoil 10mm, but probably a hundred rounds of full-power 10mm, also. No problems with mount or function in a year of ownership.

Great optic to use on your pistol. In any angle, any situation, you’ll be able to find the red dot. Even hanging upside down.

I've been waiting for this optic in the Green Reticle. I purchased this one, but need the Green reticle for my astigmatism. I have two Holosun AEMS (Green) for two rifles and they work great with my astigmatism. I would like to get the HE-509 or the HE-509T with the ACSS Vulcan reticle in Green. I keep asking Primary Arms and Holosun when it will be available in Green. I've been asking for 8 months now. I'm almost at the point where I sell the HE-509-RD and replace it with the HE-507C-X2 ACSS Vulcan in Green. Holosun sights are awesome. Well worth the money. I replaced both of my Leupold DPP with Holosuns on my EDC.

I’ve ran an RMR for years, and I immediately like this one better. I can find the chevron much faster than a regular dot. As long as it holds up there will be no beating it.

That’s it.

Do I like the sight? Yes.
Will I continue to use it? Yes.
Will you need to have lots if batteries? Yes.
Will you need to change them frequently? Yes. Every 2-3 months, to be safe when out and about during edc.

1. I like the enclosed emitter.
2. The front emitter glass screen scratches easily with EDC use.
3. With the settings at power lever 8 and the moa ring, I only can get not quite 4 months max out of a high end 1632 battery, with shake awake on and off at 10 minutes when no movement. Granted it is EDC used though. That is 5 batteries per year use! No where even close to 20,000 - 50,000 hours!!!!
4. Setting 8 is minimum to use with a weapon light otherwise the ring and chevron washes out with the weapon light turned on in the dark.
5. In the sunlight, 8-10 setting is a must to see the chevron well.
6. Do NOT ever count on the solar power backup to use alone!!! EVER. It is only useful when in daylight to slow battery drain.
7. In addition, if the battery is dead, DO NOT REMOVE IT because the solar backup in the sunlight will NOT WORK at all. The battery completes the circuit.

I have quite a few hours behind one of my .22 pistols with a RDS. I still lose the dot somewhat regularly, but have become better over time.
This reticle, however, is genius. I don't think I'd settle for anything less after trying it.
Mostly easy install with one hiccup: The plate screws don't have very good torx tolerances, so the included driver didn't work very well, or at all in one of them. Another Chinese-made driver slipped also. My high-quality Bondhus T9 was able to torque the plate screw though.
Mounted to a Glock 40 10mm, the whole RDS is maybe a millimeter wider than the frame. Looks good.

Great enclosed RDS for Duty Use. Optic mounted on G19 Gen5 MOS using C&H ACSS plate, works great, tight tight fit. Thanks Primary Arms for putting this optic out in an enclosed emitter.