I have a JP GMR15 and I was good with it, till I got my better have a Leadstar. I liked the weight of Leadsrar so much, that I got me one as well. The JP will be a good backup gun, if need be. When shooting them both I can't tell any difference between dot movement. The Leadstars are lighter and easier to move around with. She will not shoot the JP, due to the weight of it.