The Strike Industries AR Shim Set for .223/5.56 or .308 assists in timing and alignment of your muzzle devices for a piece of mind dependable installation. Crush washers are usually a one-time use washer designed to deform and do not guarantee alignment. Shim washers are flat, consistent and should be used whenever bore alignment is critical in applications such as silencer mounts or to ensure your muzzle device ports are correctly positioned. Available in both 1/2"-28 TPI (.223/5.56) or 5/8"-24 TPI (.308) sizes, the Strike Industries AR Shim Set for .223/5.56 or .308 are solid one-piece shims made in various precision thicknesses for just about any application.

Package Contents:
-x4 0.075mm/0.0029 inch shim
-x3 0.22mm/0.0086 inch shim
-x3 0.11mm/0.0043 inch shim
-x2 0.34mm/0.0138 inch shim
-x1 2.0mm/0.0787 inch shim

Product Spec:
for .223/5.56: 1/2"-28 TPI
or
for .308: 5/8"-24 TPI

Features:
-Available in .223/5.56 or .308
-Assists in timing
-Ensure alignment
-Properly position ports
-Reusable
-Made of SUS 304 Stainless steel