INCREASED BRIGHTNESS - Upgrades your forend WeaponLight to a powerful 1000-lumen LED, significantly enhancing visibility in low-light conditions for improved target identification. EXTENDED RUNTIME - Provides 1.25 hours of continuous high output, ensuring reliable performance during critical operations when consistent illumination is essential. ENHANCED DURABILITY - Constructed from Mil-Spec hard-anodized aluminum, offering exceptional resistance to scratches, corrosion, and impact for reliable use in harsh environments. BROAD COMPATIBILITY - Seamlessly fits multiple SureFire forend WeaponLights including 617, 618, 620, and more, ensuring versatile use across different weapon platforms.