this is how to make a very easy blowgun that shoots nerf darts. you need a piece of PVC pipe and a dart (and the top of a plastic bottle). first, check the fitting of the dart to the pipe. if it doesn't fit just wrap it in duct tape in the front and back till it fits. for the mouthpiece, cut the top off of a bottle and stick it on top of the pipe, taping it on with more tape. now you have your own nerf blowgun. it shoots very well, maybe better than a real gun, but lots cheaper.