I picked up a used A2 Aviator a month ago, but it only will fire one Surefire bulb. I've ordered a replacement from LF and another brand new stock SF MA02, and neither work. I can switch them around, go from primary to RCR123's, and only the one light bulb will work while the other two won't fire.
Any ideas? I'm thinking I probably need to send the light back to Surefire for warranty repair.