I have a Silver Bullet I bought recently and I bought an 18650 extension sleeve and a Kicked for it. With a 18500 and no sleeve the Kicked worked perfectly but with the 18650 and the Kicked in the sleeve it only worked sporadically. I finally noticed the Silver bullet tube was bare aluminum on the inside but the sleeve was anodized. I polished the inside of the sleeve with a fine grit rubber polishing tip on the jeweler's lathe and now the Kicked works perfect in it as well. The anodizing was just enough to make function iffy.
Just something to be aware of if you are using anything anodized...
Just something to be aware of if you are using anything anodized...