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Otter Creek Labs OPS/AE/OC Thread Protector - Black Nitride
$28.00
This is a knurled thread protector made from 17-4 stainless steel that fits the ops 12 aem and OCM pattern muzzle devices. It will also fit the OTB OTB-MB/FH PTB and MWA 1 piece adapters. Available in black or raw heat treat.