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The GEMTECH 5/8-24 shim kit is ideal for mounting flash hiders, muzzle breaks or suppressor mounts. Crush washers and split-ring washers can cause canting of any brand of suppressor. By replacing those crush washers with a precision-made set of GEMTECH shim washers you can achieve perfect alignment and timing.
The GEMTECH 5/8-24 shim kit is designed for most 7.62 rifles such as AR10-type carbines.
Hardened steel shims ensure precise fit and correct alignment of flash suppressors, muzzle brakes, and compensators. Large (thick) shim allows 90° of rotation and can be used as a spacer for barrels not having a relief cut behind the threads. Medium shims add approximately 45° of rotation. Small shims used with large and medium shims provide smaller degrees of rotation for finely-tuned, critical alignment.
SPECS: Steel. Sold in 10 paks (1 small, 1 large, 8 medium). .223 - .748" O.D. Fits muzzles threaded ½"-28 tpi.