Your choice of FREAK® front, barrel threads & BOREMASTER kit.
The FREAK® XL inserts offer a full 8-inch control bore which is expertly honed from aerospace-grade aluminum alloy and available in a complete range of bore sizes:
.679, .682, .684, .687, .689, .691, .693, and .695.
Like the original FREAK®, FREAK® XL inserts are color-coded with a durable low-friction hard anodized finish and laser engraved for quick identification.