I've had mine for about a week now, very nice gun unfortunately i only had 0.25g bbs so it wasnt that accurate at range also my scopes off by rather alot, very heavy to carry around all day but its worth it. Any way i was wondering how to adjust the the power control system do you have to remove the bolt to change the power or can you do it with the bolt still in the gun but with the mag out, i tried to change it through the mag hole but couldnt turn it i just kept on breaking my nail.