thing is,although people are saying use maglites etc etc,he will have to be very close to the enemy.........and if theres alot of them,they'll swarm him and COULD grab the tool off you son and use it on him.
knocking the biggest out might work in your kneck of the woods,but it wouldnt round mine(feltham,middlsex)
you dont want him to do time for protecting himself by using stun guns and pepperspray........and its no good him waalking down the road with a bat!!!!!!!!!!!how would he explain that one to the old bill!!!!!!!!!!!

ive got just the thing for you mate!!
Get your self down to pets mart or local market etc etc.....

Find yourself the biggest badest Metal doglead you can find!!!!

this way,he can keep it in his pocket........but he has a range of bout a 4ft or so, if he gets stopped by old bill then theres a thousand excuses he could use and if he slapped them round the chops with one of them theyd fuckin know about it,and wouldnt even see it coming

oh and for the record i know someone who was caught with a stungun when he was raided.It was in his draws next to a doglead and tennis ball.When he went to court for it,he explained that his dog kept getting attacked over the park and the dog owner never put it on the lead so he took this to the park with him!!!!!!!!!!BELEIVE it or not,he got away with it as everything matched up to what his defence was,and only got a slap on the wrist and told not to do it again!!!!!!!lol