Product Review
This is a precision-made set of Gemtech shims used on 5.56mm and 6.8 caliber rifles with 1/2-28 threads. Use these shims to achieve perfect alignment and timing.
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This is a precision-made set of Gemtech shims used on 5.56mm and 6.8 caliber rifles with 1/2-28 threads. Use these shims to achieve perfect alignment and timing.
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