Oil-Based Formula: Not water-based

2 wing pouches

This ensures longevity and durability

Outer belt constructed with proprietary TAC-LAM™ high strength laminate and dual nylon webbing

undistorted field of view across the entire lens surface

Holosun Open Reflex Optical Sight HE507K-GR X2 Sig Sauer P229 Oil-Based Formula: Not water-basedHolosun Open Reflex Optical Sight HE507K GR X2 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 complement the Lock Mode by placing them lower