I just sold some HP air flow related equipment & was surprised that even though some of the post responders weren't quite clear on its application & function they wanted to buy and, I guess, experiment. This is probably redundant on this forum but PLEASE BE SAFE & AWARE when dealing with the (very) High Pressures we utilize when owning/using airguns. Thankfully I don't remember reading in these forums of anyone getting hurt but SH-T HAPPENS! Take it EASY when filling & inspect your stuff frequently but above all use your brains & be "just a little scared or in awe" of HIGH PRESSURE. Have a great & safe airgunning life