The Tippmann Stock Barrel it is now a non-ported barrel. It only comes in the stock length. Tippmann '....found the porting had not effect on the shot of the ball and therefore not necessary.' Give it a try!
This product is used in the following guns: A5 Response, A5 E-Grip Electronic, X7/Phenom Basic, X7/Phenom Response, X7/Phenom E-Grip Electronic.
The Tippmann Part Number for this product is 02-39.