Crayola barrel
Mini Screwdriver
Dremel
Electrical tape
Here is the mod: Take the SM250 apart and take out the 4 rotating barrel. Then take the black tube and cut it just on the edge where it used to push air into the rorating barrels so there is more space for the air to travel through. After this, cut just enough of the gun off so the crayola barrel can fit through because there is a tiny opening so it wouldn't be able to go in there. After this, put the crayola barrel in about 2 cm into the black tube and either electrical tape it or glue it in. After this I put electrical tape around the crayola barrel so it looked cooler. Put all the interals of the gun back in except the 4 rotating barrel. The ranges I got with this gun are about 40-50 feet ever time. I hope you all enjoy this mod
