i was trying to copy my friends marshmellow gun and during the process i realised that a paintball fit perfectly through 3/4 inch pvc pipe!
of course i tested it and it worked.

Step 1: Meterials

you will need 2, 90 or 45 degree connectors,2, 3 way connectors, and 1 or 2 long peices of pvc pipe, duct tape.

*make sure that the pvc pice is 3/4 inch*

Step 2: Assembly

to make a basic paintball gun design, follow these instuctions or you can skip this and make your own design.
**********************************************************************************************************
1.cut a peice that is about 5 inches off one of the tubes and attach a 90 or 45 degree connecter on both ends facing opposite directions

2.next cut another peice off that is about 2 1/2 inches and attach to the connecter

3.take one of your 3 way connectors and attach it to the other side of the 2 1/2 inch pipe

4.cut off another peice that is about 4 inches and attach it to the bottom part of the three way connector

5.cut off yet another peice that is about 8 inches and attach it to the only remaining side of the first 3 way connector

6.take the other 3 way connecter and attach it to the other side of the 8 inch tube

7.cut off a 4 1/2 inch peice of pipe and atttach to the 3 way connecter facing upwards

8.lastly, cut off a 10 inch peice of tube and attach it to the last side of the 3 way connecter.

thats it!!

Step 3: Shooting

to shoot, blow through the exposed end of the 90 or 45 degree connector.
the FPS (feet per second) depends on how hard you blow.

Step 4: Loading

to load the gun, simply put a paintball in the barrel of the gun. easy!

Step 5: Paint a Forest

you probably wont be allowed to shoot at your house unless you own a lot of property so find a nearby forest and paint it! remember, always were sefly goggles.
*for better use duct tape all exposed ends exept for the barrel and blowing tube*