kiriba-ru
(kiriba-ru)
5
If you are going to use parts that are made same year they should be interchageble. I have S1 from first batch (2 tubes included), S41S and spare non-anodized 18350 A6 tube from BG. S41S tube dont fit my S1, threads OD is 0.4-0.5mm bigger. Bare tube fits both. S1 tubes cant be screwed hard to S41S head or tail because threads just slips.