angel A1 i know it can use HP but im proper anal about shooting it on LP, i had one when they first came out and i noticed it was much better on LP. maybe im being finicky but hey. ideally all i need is a bottle, i think i have an lp reg but its beem two years since i used it and cannot remember if it was hp and i changed it to lp or vice versa, better to be safe than sorry i guess