XS Sights GAT - Glass Assault Tool
"The GAT will allow the operator to rapidly (and effortlessly) breach glass and gain access to high-risk environments while keeping both hands on their primary weapon platform with no effect to their weapon's zero or combat readiness."
"The GAT is designed to penetrate car side and back window glass while enabling the operator to keep their hands on their weapon. It will also allow officers to defeat most cosmetic glass when responding to high risk missions such as active shooter or hostage rescue."
"The GAT-Glass Assault Tool is a simple device that attaches to your weapon in seconds and that can penetrate glass with ease. We attached four to rifles in our Basic Swat course and students shot over 500 rounds with the devices attached. They did not come loose or change their zero."
Master Sergeant Paul Howe (USA-Ret)