I just picked up the HS515CU. It is so awesome for that price point! If you can't find the model that you want, just go to the holosun.ca website and order from there. It is only $10 more than other suppliers.
Comes with low and high quick release mounts
Can change from manual to auto brightness. The highest setting is so bright that even outside on a perfectly sunny day, it is too bright!
Can change from circle dot to just dot if you want.
Includes flip down lens covers and kill flash
Auto off when not moved or if you close the lens covers. instant auto on when moved or if the lens covers are opened! I love this feature as I'm always forgetting to turn my red dots off!
Solar and battery powered and switches automatically to conserve battery power when the solar can keep up.
These will be my go to red dots whenever I need a new one!
For $319 before taxes from the distributor, you can't find anything out there with these features for anywhere near that price!
Can't wait for the HS510C open reflex sight to come out in the fall!! Will definitely pick up one of those!
Ian