I find its easier just to install the flash hinder by first just threading it on with the bevel washer by hand until it stops against the barrel. Then just unthread the flash hinder until it aligns up and down correctly. If the gap is too small, back it out one more turn. Then using the shims in the kit, measure the gap between the washer and flash hinder. Then using the chart they give with the instructions, adjust the shim thickness by adding in .002" to .003" to your shim thickness you measured. The flash hinder only needs to turn about 1/16 of an inch to reach the torque value they call out in the instructions. I've installed 4 of flash hinders this way and its the easiest way I've found to do it.
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