What kind of barrel is on a autococker trilogy competition?

I have the gun but my paintballs are falling out. I know the barrel is 14';. I want to know what kind of barrel it is and the bore.What kind of barrel is on a autococker trilogy competition?
The stock Trilogy barrel is .691 and is Autococker threaded.





BTW... Balls rolling out of the barrel is pretty common with Autocockers. To reduce this likelihood, you will need a good paint to barrel match. The ball detent only prevents multiple balls from feeding into the chamber.