I have a Heiland tube and want to try and confirm if it is the correct one for a Boba ESB blaster.
It has the following markings -
Number 900448 stamped on it plus the company name and extension (x2) and shutter (x1) also pat pend. it has 6 slots 3 rows of 2 and then three holes around the back. with a nice biig fat thread at the opp end.
Just looking for clarification of the model? Photos are not too good as is it so shiny but here is one.