DYE UL-I Barrel Inserts

Accuracy DYE-versified. The DYE Boomstick-I Barrel Insert System resets the standard for barrel precision, and this listing brings all 9 bore sizes together: .676, .678, .680, .682, .684, .686, .688, .690, and .692. Whether you're shooting brittle tournament paint or field-grade rec paint, you can now match your insert with ease—all from one product page.

Each insert fits seamlessly into the Boomstick-I and PWR-compatible barrel systems, delivering enhanced accuracy, air efficiency, and consistency shot after shot. Engineered with multi-stage precision honing and a toolless slip-fit design, these inserts are the ultimate upgrade for serious paintball players.