the slayer trigger is just a replacement trigger its NOT magnectic!!!
if you want a slayer i am putting an order in with a company in the US (as there is none in good old blighty)
if you want the mag mod you are more than likely gonna have to send it to the mastertechs in the US to get it done, though i do believe you can do a ghetto mod yourself got to
Angel Owners Group
do a search and you will find all the info you want.
M@