SIG SAUER Romeo-X SIG-LOC Compact Pistol-Mounted Circle Red Dot Sight (Black)The SIG LOC (Leverage Optimized Connection) system was first conceived 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 circle red dot. SIG LOC is an innovative