The Dead Air Shim Kit for barrels with 1/2-28 or 5/8-24 threads is composed of three different shim thicknesses. The graphic on the packaging details the thicknesses and identifying features of the shims included with the kit. Always place the thickest shim(s) on the barrel first.
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Dead Air DA139 Xeno Black Nitride 4140 HT Alloy Steel M14-1RH Threads
$66.00
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