Very happy with this optic. I also use a different Holosun enclosed optic on a separate pistol. Really like the different Comp reticles. I primarily use the 2 moa dot with the 8 moa ring. But I like having the other options. Very happy, would definitely purchase and use this optic for any pistol.

Excellent have several Holosuns, 507 comp is
my favorite. Large window easy sight acquisition

I love the large window and the selection of reticles. The only problem I have had is with the recessed + and - buttons as they are hard to function. You must must in a specific portion of the button or there is no changing. Also the RDO at this price should include a dust cover.

Love the reticle!

People are probably going to think I'm crazy for saying this but I replaced my trijicon type 2 hrs I just couldn't take that damn window it was so freaking small I know it's not trijicon legendary durable but they really have to do something about that window it's just so freaking small in the bottom battery but it was the window I replaced it with this holosun 507 competition and I don't care if so called experts say this isn't for duty use or EDC that's what I use it for I love this thing it's absolutely amazing I definitely recommend anyone to buy this I have the green radical the Green Dot is so crisp and clear it's really unbelievable what holosun has done I definitely recommend