1/2-28 Shims kit .223 5.56 Indexing packing including 11 different thicknesses, each 4 pcs total 44 pieces
Will NOT fit .308/7.62
Installation notes: This is just a game of trial and error to get the feel that you are looking for
5/8-24 Barrel Shim Kit is for 5.56mm/ .223 These shims assist in timing and alignment, dependable design constructed and precision made from quality 304 stainless steel. Our shims Will Not adding unnecessary bulk of your barrel.
Outer Diameter of .77" & Inner Diameter of .51"
For Timing and Alignment. Fit Barrels with 1/2"-28 TPI (.223/5.56) Threads
it includes .002"x 4, .003"x 4, .004"x 4, .008"x 4, .010"x 4, .012"x 4, .016"x4, .020"x 4, .024"x 4, .028"x 4 and .030"x 4 shims. Total 44 Pieces
44 Pack Stainless steel shims of various thickness by Clearly Marked & Separate Packaged,so you can quickly identify thicknesses and save time.

1/2 X 28 Barrel Shim Kit for Muzzle Brake Alignment Set .223/5.56Mm (44 Pack, 11