Yes, it's a shame Fivemega doesn't make these anymore. E head and C tail
I do like the idea of working up an A2 Aviator, they are one of my favorite torches. I'm not too sure of the timeline, but I think the oldest versions have a skinny body and cannot be bored for 18650, but I know Tana has some nice LED modules, and Barry Milton/ Precision Works has bored the A2 before.

I do like the idea of working up an A2 Aviator, they are one of my favorite torches. I'm not too sure of the timeline, but I think the oldest versions have a skinny body and cannot be bored for 18650, but I know Tana has some nice LED modules, and Barry Milton/ Precision Works has bored the A2 before.