Sig Sauer Electro-Optics SORX1660 Romeo-X Sig-Loc Compact Cerakote Black 1X 24mm 6 MOA Red Dot Reticle 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. Magnification: 1X Objective: 24mm Dot Size: 6 MOA Length: 1.67" Weight: 1.24 Oz Finish: Cerakote Battery Size: Cr1632 Reticle: Red Dot Adjustment Size: 1.50 MOA Proofs: Waterproof Optic Coating: LensArmor/SpectraCoat Windage Elevation: Adjustable