Holosun 507K X2 [green] tool MSM-03 is a premium one-piece

MSM-03 is a premium one-piece scope mount with a quick detach (QD) mechanism

Original sight set assembly

and threadlocker to secure the screws in place

Environment data

Holosun 507K X2 [green] tool MSM-03 is a premium one-pieceThis red dot uses the Holosun K series footprint standard. The HE507K GR X2 is an open reflex optical sight designed for concealed carry pistol applications. The X2 Series pistol optics feature two improvements. First is the addition of Lock Mode from our 2018 2019 LE pistol optic models. Lock Mode, when activated, locks the buttons preventing inadvertent setting changes. Second, the buttons have been redesigned to compliment the Lock Mode by placing