Hi All! I picked up this MP5 handguard /flashlight combo from a retired Navy SEAL, and I would really like some help identifying what flashlight was used so that I can purchase the 'head" and get it working again. This is obviously from pre "sure fire" days. The body of the flashlight is aluminum, but the inside is blue plastic. The tail end is marked "Made in USA", so that will help narrowing it down. Thanks for looking.