The XS R3D 2.0 Glock 21 Sup HGHT ORG night sights offer cutting-edge technology for superior shooting performance. Designed for unparalleled brightness and durability, these sights enhance accuracy in any lighting condition. Engineered for easy installation, the R3D 2.0 requires significantly less force for mounting. Built for everyday carry, they feature a robust design that ensures reliability during intense use. Achieve fast target acquisition with the combination of serrated rear sights and a tritium photoluminescent front sight. For Glock 21 Suppressor Height Orange Ring Tritium front and rear sight Black nitride surface finish DIYer Install Rated Dual-Illuminated tritium photoluminescent front sight High contrast orange or green photoluminescent Glow Dot Anti-glare Blacked-out Serrated Rear Sight Elevate your shooting precision with the XS R3D 2.0 sights-tailored for the discerning shooter.