The SIG-LOC (Leverage Optimized Connection) system was first concepted during the development of the ROMEO-M17 revolutionizing pistol-mounted optic integration with a low-profile ultra-tough connection between the optic and pistol slide. Designed for precision and strength SIG-LOC ushers in a new era of expectation and performance for civilians and professionals with the ROMEO-X SIG-LOC pistol-mounted red dot.