TRUGLO IGNITE™ Mini Compact 22mm Red Dot Sight - 2–MOA Red•Dot for precise aiming - 22mm multi–coated objective lens - Digital push–button brightness controls -10 brightness settings - Remembers last used brightness settings when powering on - Includes low and high Picatinny / Weaver rail mounts for maximum compatibility - Locking windage and elevation adjustments - Wide field of view - CNC–machined from aircraft-grade aluminum - Unlimited eye relief - Auto-off feature preserves battery life (4–hour idle from last button push) - Nitrogen gas–filled - Rubber lens cover included - Battery included (1.5V AAA)