This shim pack is designed to work with AR-15 BAR barrel nuts. It will not work with .308 Win and 6.5 Creedmoor barrels or barrel nuts. Includes 8 shims.

NOTE: This product is already included with Aero's AR-15 BAR barrel nut. It is not necessary to be purchased separately. This individual product is available for customers who have lost or damaged their existing AR-15 BAR barrel nut shims.