I Upgraded My Daddy's Old Surefire 6P - Malkoff M61 LED Conversion - YouTube
Surefire LED Conversion Head, Hard Anodized Black,
DEONGO Flashlight Bulb LED Replacement Bulbs Drop-in P60 Design Module for All Surefire Hugsby C2
Super Bright Blue Light Led Replacement Bulb Single Mode P60 LED Drop-in Module Design for Surefire Hugsby C2 G2 Z2 6P 9P G3 S3 D2 Ultrafire 501B 502B and Other Hunting Flashlights - -