This shim kit for mounting flash hiders that are to be used as suppressor mounts: Crush washers and split-ring washers can cause canting of any brand of suppressor - replace those crush washers with a precision-made set of GEMTECH shim washers for perfect alignment and timing. Available in 5/8-24 for 7.62 rifles such as AR10-type carbines, or 1/2-28 for most 5.56mm and 6.8 caliber carbines.
Warning: Cancer and reproductive harm: https://www.p65warnings.ca.gov/
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