Ok ill help you out ok go to the blockland folder and then addons,shapes then find the gunshell then copy it. then paste it to the gun you downloaded make sure you paste it in the shapes folder in the gundownload then it will work. also if you want the weapon to do damage go back to the shapes folder find the bullet copy that then paste it to the shape folder in the gundownload ok.. hope this helps please dont flame me for my bad grammer.