go on bz online shop you can get a brand new air bottle for £48 to you door then there is no need to buy a second hand one there might be things wrong with it and there is no need to be conderned about how many years left on test just get a new one
there £128 to your door form bz so i dont no the leak is easy 2 sort out just sounds like it need a new o ring and a chip off the reg isent goin to affect how the slg works hope this helps
if you get the air bottle and the slg from bz it will come 2 £167.95 to your door then get a brand new halo off cliff i think he got them i blue wich i think is the best coluor for a slg mines blue lol so is my pmr lol it will all come to about £218 then if you **** a clamping feed neck get one off ebay there cheap on there