Holosun 509 ACSS Vulcan Red Dot w/ RMR Mounting Plate - HE509-RD-ACSS-R

I'm using on a Springfield Echelon; some info:

First off, the screws and pegs that were under the factory installed "red dot mount cover plate" were the correct ones for this 509 ACSS Vulcan red dot sight. The factory cover plate screws stick out the required .110" below the "RMR mounting plate" which is included with this red dot sight. The second thing I want to mention is its "co-witness" with iron sights. The Springfield factory available accessory sights "Delta Point PRO Height U-notch" sights, for the Echelon series and XD series give a nice (but low) 1/8" co-witness with this red dot sight. I like this myself, as they do not block the view threw the red dot sight. As far as ease of acquiring the "dot/chevron" with this sight, I imagine the 250 MOA circle will help, but I already have a good presentation with "Iron sights/red dot sights" (from years of use) but is still reassuring to see it as I am presenting my pistol to target. I really like the "Chevron/dot" and I find it worth the price of admission. To sum up, it's a good sight and I would recommend it!

Another awesome red dot

My first closed emitter red dot. Thought they would be bulky when carrying, but no real difference-just as concealable and no worries from dirt or moisture. The ACSS reticle is a game changer for getting on target quickly. Would recommend to everyone. This is my second one, and soon all of my optic pistols will have one. Kudos to Freedom Gorilla for the massive amount of information on their site eliminating the confusion on which plate to get for fitment. This install on a G22 took about 3 minutes. Thanks FG!

Hands Down The WINNER!!!

This is by far, without a shadow of doubt - the best of the best in my opinion. If you’ve not tried this optic, put it in your cart and tell them I sent you! You absolutely will fall in Love ❤️ and not regret this purchase. This Vulcan ACSS will go on everything I purchase from here on out. Bravo Holosun.