Can used for index the standard barrel nut, let you have perfect alignment. Fit between the barrel extension and the barrel nut.
Compatible with standard barrel nut, fit .223, 5.56, 6.8 and 300 BLK. Will NOT work with .308 Win and 6.5 Creedmoor barrels or barrel nut. Please check fitment before ordering.
Inside Diameter 1.0", Outside Diameter 1.130". Precision Made from 304 Stainless Steel for long time use.
20 Pack (Each Thickness is 5 Pieces) Assortment come with 4 Thickness .001”, .002”, .003”, .004”.
Clearly Marked & Separate Packaging so you can quickly identify thicknesses and save your time.