Does any1 own one of these I want to buy a 70 cm but I need to know exactly what extra spear tip I need and what extra shaft I need. I also want to know if the gun is hard to load and if one of you could post a loading video that would be great. I'm 15, 5'6", and 110 pounds. Would it be easy for me to load the gun, otherwise I might get a 58 cm Mares Sten.