The optics-ready Taurus GX4 is a palm-sized micro-compact 9mm thats big on personal protection. With Taurus's exclusive TORO (Taurus Optic Ready Option) platform seamlessly integrated into the slide, the Taurus GX4 is capable of accommodating the latest micro-sized red dot sight technology. Right out of the box. Ensuring this exceptional everyday carry fi rearm is not only easy to conceal, but effortless to update. For added peace of mind, the Taurus GX4 is backed by our Limited Lifetime Warranty and industry defining customer service. Compatible With: Shield RMSc, Holosun HS507k, Sightmark Mini Shot A-Spec M3, Hex Wasp GE5077-MIC-RET, Trijicon RMRcc (need adapter plate)