The HS507K X2 is an open reflex optical sight. The X2 Series optics feature two improvements. Lock Mode when activated locks the buttons preventing inadvertent setting changes. Second the buttons have been redesigned to compliment the Lock Mode by placing them lower and out of the way. Additional features include Holosun’s Super LED with up to 50k hours battery life Multi-Reticle System and Shake Awake.
Holosun HS510c Reflex Red Dot Sight + HM3X 3X Magnifier Combo Set
$484.99 
Pro Target 1x 20mm Red Dot Sight - Matte Black
Original price was: $89.17.$88.95Current price is: $88.95. 
Holosun Open Reflex Optical Red Dot Sight 1x HS507K X2
$295.99
Additional information
| Brand | Holosun |
|---|---|
| Merchant | Walmart – sporting goods |
