Many websites have information about paintball barrels, as well as other aspects of the sport of paintball. Some such websites are PaintballInformation and ChoicePaintballGuns.
Any Spyder threaded barrels.
why is this marked for paintball.....? and to answer your question..... no
Autococker threaded.
Aftermarket barrels. A longer barrel will get your paint into a smaller spread. Try Stiffi, Smart Parts, or Dye barrels.
no, there are single piece barrels that are just one piece of (typically) aluminum, 2 piece barrels that split in the middle and then barrel kits which have multiple pieces
Almost all barrels are made with a slight overbore. Too much overboring will cause the paintball to lack power.
twister makes barrels in all the standard threads.
There are many items that are sold on the Bandlands Paintball website. To name a few they offer paintball guns, masks, clothing, barrels, pads, air tanks, protective gear and DVDs with instructions.
Air regulators, barrels, hoppers, asa, and trigger wells.
As more companies started making Paintball markers, there started to be MANY companies that made aftermarket barrels, however it was cheaper for them if there was a universal fitting for the barrels instead of dozens. Many of the companies decided that WGP's Autococker was a popular marker with a strong but easy to make barrel thread, and adopted it as the thread most barrels would be made in. To this day, even with WGP's decline, it is still the standard thread for most markers.
Two piece barrels allow you to change the diameter of the bore, which lets you fit the paintball better, leading to more accuracy.