Maglite LED Upgrade, Ultra Bright High Power 10 Watt Luminus SST-40-W LED Conversion
Amazon.com: Lumencraft LED Conversion Kit Compatible/Replacement for Maglite Flashlight - 2000 Lumen for 3 D Cell - High Power Upgrade for Maglight with 12x Cree XTE Emitters : Tools & Home Improvement
Litt Industries Maglite Ultimate 505 Lumen LED Upgrade Bulb
UpLED Maglite LED Conversion Upgrade 300-360 Lumen Bulb 2 to 6 D or C Cell Flashlights - Amazon.com