Different types of barrels get you performance. Now you can easily switch out barrels to vary the performance of your blaster.
Before, you had to use a special coupler to make your ramrod compatible with your tighter barrel. Well no more.
Tighter barrels (ID .509 & .495) now come with a “chambered” option, making them compatible with a default ramrod on a Caliburn and Talon Claw.