The Shield Sights RMS Sub Compact (RMSsc) is Shield's smallest and most concealable red dot sight featuring the narrowest profile available and incorporating their advanced glass lens technology in a sleek minimal design with 4 MOA reticle.Shield Sights RMS Sub Compact Glass Edition4 MOA red light emitting diode (LED)Crystal clear glass lens with hard dip coatingParallax-free optical designNight vision compatible (lowest brightness setting)Standard Shield footprint for broad compatibilityDurable aluminum constructionUltra-compact profile for maximum concealabilityIdeal for concealed carry applications backup sights or any situation requiring the smallest possible optic footprint while maintaining professional-grade performance and reliability.