XS Sights AR20016 AR-15 A2 Tritium Front Sight Green/White

The XS Sights AR20016 delivers enhanced target acquisition for AR-15 platforms through self-illuminating tritium technology. This Mil-Spec front sight post combines nuclear-powered illumination with a high-contrast white outline for rapid sight alignment in any lighting condition.

What Makes This Different

Unlike standard A2 front sight posts that rely solely on ambient light, the AR20016 incorporates genuine Swiss tritium that glows continuously for 12+ years without batteries or maintenance. The green tritium center creates a distinct aiming point while the white outline provides maximum contrast against dark targets. This dual-illumination system outperforms basic iron sights in low-light scenarios where standard posts become difficult to distinguish.

Key Features

• Swiss tritium insert provides 12+ years of constant illumination
• Mil-Spec green tritium with white outline for maximum contrast
• Direct replacement for standard A2 front sight posts
• CNC-machined from hardened steel with matte black finish
• Standard .070" aperture diameter maintains factory zero
• Fits all AR-15/M16 front sight towers and gas blocks
• No batteries, switches, or external power required

Field performance remains consistent across temperature extremes from -40°F to 160°F. The tritium maintains brightness in complete darkness while the white outline ensures visibility in bright sunlight. Law enforcement agencies specify this configuration for duty rifles where rapid target engagement is critical. Competition shooters benefit from the enhanced sight picture during early morning or late evening matches.

Technical Specs

• Tritium Color: Green with white outline
• Thread Pitch: 5-40 TPI (standard A2 specification)
• Overall Height: 0.460 inches
• Aperture Diameter: 0.070 inches
• Material: Hardened steel construction
• Finish: Matte black oxide coating
• Tritium Half-Life: 12.3 years
• Compatibility: All AR-15/M16 front sight bases
• Country of Origin: USA

The AR20016 transforms standard iron sights into a 24-hour sighting system without adding bulk or complexity to the rifle. Professional operators and serious shooters choose XS Sights for mission-critical applications where sight failure is not an option.