<p>1/2 x 28 Barrel Shim Muzzle Brake Alignment Shim Kit 223 556 5.56 .223 Indexing Stainless (9 Pieces)</p> <p> <br> </p> <p>Different Shims for perfect timing</p> <p> <br> </p> <p>Stainless Finish</p> <p> <br> </p> <p>For barrels with 1/2"-28 </p> <p> <br> </p> <p>Muzzle Device Alignment Set Includes:</p> <p> <br> </p> <p>1x Large Shim</p> <p> <br> </p> <p>4x Medium Shims</p> <p> <br> </p> <p>4x Small Shim</p> <p> <br> </p> <p>This shim kit is a replacement for the peel washer and is used for mounting muzzle devices. New muzzle brakes are normally supplied with the necessary washers, nuts, or shims; however, sometimes replacement washers are needed if one is damaged or if installing a muzzle device on a different gun.</p> <p> <br> </p> <p>While Peel washers require you to heat them and then peel off separate layers of the washer to get to the desired thickness, a Shim Kit is much simpler. There is no heating or peeling of layers needed. Just install the necessary combination of shims to get the precise alignment you need.</p> <p> <br> </p> <p>Each shim set ships with QTY 1 of Shim 1 (largest), QTY 4 of Shim 2 (Medium), and QTY 4 of Shim 3 (smallest). The large shim can be used to give the installer one half of a rotation or as a spacer for barrels that do not have relief cuts behind the threads. Shim 2 is used in varying quantities to achieve the proper alignment of your muzzle device. This shim gives the installer approximately 45 degrees of rotation. If needed, Shim 3 can be used where smaller degrees of rotation are needed for proper alignment.</p> <p> <br> </p>