here is my view on it!
i have a pre AT which is not illegal to own!
but as soon as its over 12ftlbs it becomes illegal,most Air rifles are capable of going over the limit.
so they sell them with AT fitted,which is not required by law,its just the law of the manufacture.i may be corrected?
now fitting a adjusting tool which is clearly visible to raise the ft-lb ,may cause some raised eye brows if pulled over by the police!
and may cause them to take away and test! if the police knew what they were looking for.and they find it was over power at the time of confiscation,then its bad news