You want a HP tank. Your gun will not be able to recock off a LP tank which most come set at around 450 and you need at least 600 psi with stock internals.Theres really no advantage to a LP tank. A HP tank can be run on any gun. With a LP tank you have a much greater chance of getting shoot down or........um a.......I forgot the other one. Well then whats the point of a buying a LP tank? Well there isnt.
*If I am wrong tell me because this is how I understand it to be.*