Modular blow dart gun

I designed a blow dart gun that is about 3.3 feet long and is modular. The design consists of 4 parts that all screw together to create a working blow dart gun. I have gotten the darts to shoot out up to 60 mph. And I will further improve and add modules like a snap on scope, or a snap on clip to hold the darts. I added triangles to the bases so that when the taller pieces are printed they have more support. Also towards the top and final layers of the threading, the object can start to wobble c