Vector PWR Inserts Kit - (Inserts + Case Only) At the core of the system are eight Vector PWR control inserts with exterior spiral fluting and each micro-honed for maximum smoothness, optimal ball stabilization, and consistency across all paint sizes. When paired with the Hex PWR tip's tuned porting, you get a quieter shot, better grouping, and a true competitive advantage. Packaged inside the custom HK Army EXO Hard Shell Barrel Case, every component is protected, organized, and ready for field use. Vector PWR Inserts 8 micro-honed Vector PWR inserts with exterior spiral fluting design (Barrel tip + Back Not Included) Inserts include sizes: .678, .680, .682, .684, .686, .688, .690, .692 Precision-honed bores Laser-engraved bore size markings on the barrel back