The author remixed this model.
Remix so that the PCAR is cut down the middle seam and as such spends less time under resistance from the pcar, and doesnt extend the blaster as much. This is the 60 degree Version for use with higher fps blasters. Pictured is an x shot fury x with an extended barrel.
I found that for printing on my ender 3 v1, setting the scale to 1mm larger made darts glide through perfectly compared to the original dimensions which were way to tight. (To do this on cura, go to preview tab > select the model > press “S” > tick “uniform scaling” > set one of the axis to 1mm larger.) (In my case, x and y should be 24.2331mm)