If you want to make your own professionnal blowgun, don't look anywhere else ! You just need a copper pipe (12mm ID and 14mm OD in this example), about 150cm long. Then you can print the EMBOUCHURE file to blow inside. It fits right standard mouths. The POIGNEE file is for a adjustable handle to help aiming with the blowgun. The SORTIE_CANON file is for the other side of the blowgun, giving it a military look and prevent dust and durt going inside the copper pipe. Also, you'll find a simple quiver, named CARQUOIS. For the darts, I recommend you to make Fukiya style darts (just take a look on google). These darts are very unexpensive and very accurate if well made. I've made a file name RONDELLE_CENTRAGE which allows to adjust the gravity center of the darts by gluying it inside the dart.I recommend you to print those files with 50% infill to have stronger parts. For the RONDELLE_CENTRAGE, 20% infill is fine to adjust the gravity center for 20cm long darts.