YHM AR15 Muzzle Device Barrel Shim Kit 223/5.56 1/2" or 762/308 5/8" Yankee Hill Machine AR-15
MADE IN USA
Yankee Hill Machine Co, Shim Set, 5/8" Iniside Diameter, Fits .30 Caliber QD Muzzle Breaks
Thicknesses included 2x 0.002", 3x 0.005", 1x 0.020"