The XS Sights R3D 2.0 Night Sights are second-generation tritium sights engineered for Sig Sauer pistols with suppressor height configuration for optimal performance with threaded barrels and suppressors.XS Sights R3D 2.0 Night Sight SystemFits Sig P320 P365 P225 P226 P228 P229 pistolsSuppressor height for use with threaded barrels and suppressorsTritium front and rear sights with high contrast glow dotsPhotoluminescent technology absorbs ambient light for low-light visibility50% easier installation compared to previous generationSerrated blacked-out rear sight with anti-reflective lensDual-illuminated tritium photoluminescent front sightCorrosion resistant Black Nitride surface finishTraditional 3-dot tritium sight pictureManufactured in Fort Worth TexasDesigned for everyday carry (EDC) use and abuse these sights provide the brightest notch and post configuration for fast accurate shooting in both bright daylight and low-light conditions. Perfect for tactical applications concealed carry and competitive shooting where suppressor compatibility is required.