Overcore™: your barrel system made EASY. Introducing the self-adjusting Overcore insert that automatically centers any .68 caliber paint ranging from .675 to .695. Designed to be gentle on paint with integrated self-adjusting attachments. You want improved ball-on-ball precision for all your paint, no matter the conditions. You now have choices: full standard insert kits, or the Overcore insert. EASY choice. Benefits: 1 Overcore insert. Any .68 caliber paint size. EASY. No need to switch between standard inserts to fight changing paint sizes. EASY. Dynamically adjusts to size variations of each paintball. EASY. Automatically centers paint for enhanced accuracy. EASY. Addresses ricochet effect from overboring. More gentle on paint versus non-yielding standard inserts. Features: 3-piece barrel made from 6061-T6 aluminum 14" total length 8" Overcore insert length with a .691 control bore Overcore insert attachments kit: 6 self-adjusting polymer attachments 3 sets of bands to tune the self-adjusting response light (017 70A orange) standard (016 70A green) heavy (015 50A blue) Self-aligning design ensures Overcore insert is secure and centered to the barrel tip Compatible with Freak™ XL inserts Precision-honed barrel tip with linear porting Autococker quick-threads