Barrel

There are many diameters of barrels popular in spudding, below are some that fit certain ammo:

• 4.5mm brakeline - fits bbs, good for BBMGs
• 6mm brakeline - fits airsoft bbs, a commonly used ammo in BBMGs.
• 3/4" CPVC, 3/4" sch 80 PVC, or 1" sch 120 PVC - fits .68" paintballs
• 3/4" sch 40 PVC - fits 12g CO2 cartriges, AA batteries.
• 1" sch 40 PVC
• 1.25" sch 40 PVC - fits somesort of battery
• 1.5" sch 40 PVC - a common size, good trade-off between power and potatoe usage. Available rifled from the SGTC
• 1.5" sdr 21 PVC - fits golfballs.
• 2.5" sch 40 PVC - fits tennis balls well.
• 3" sch 80 PVC - fits many drink bottles well.