This is a video to show you how to remove the anti-tamper from the trigger mechanism on a BSA. This video is to help the people, who have purchased a HuMa R-10 regulator, to gain access to their hammer spring to adjust the power to keep their rifles legal.
The legal limit for an air rifle in the UK is 12ftlbs, if your rifle is found to be over this power your rifle will be confiscated and you could end up in jail.
Do it at your own risk and I accept no responsibility if you damage yourself or your airgun.
If in doubt send your airgun to a professional.