For Timing and Alignment. Fit Barrels with 1/2"-28 TPI (.223/5.56) Threads
Precision Made from 304 Stainless Steel.
Separate Packaging & Marked so you can quickly identify thicknesses and save time.
Each kit includes 32 shims in 8 thicknesses (.002", .003", .004", .008", .01", .02", .03", and .04"), allowing for precise adjustments to meet your specific alignment needs.