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Barrel Shim Nuts Free Float Spacers Adjustment .001 .002 .004 Thick (12 Pieces)
IDxOD = 1 x 1.125''Thick.001-.004''Material Stainless Steel 18-8Pack including 12 pieces5.56/.223 free float barrel shim for timing hand guard barrel nut fine adjustment ID 1'' OD 1.125'' Thick .001 4 pieces .002 4 pieces .004 4 pieces
























