2 Replacement Shims for timing the AR-10 308 M38M Series Handguard Barrel Nuts. SKU: BNS02
2 Replacement shims for timing our Presma Series AR-10 308 M38M Free Float handguard barrel nuts . This is for the barrel nut set up that needs to be timed with shims (not for the non timing type set ups or for the Slim Series handguards).
The 2 shims are free shipping if ordered by themselves. They ship regular mail in an envelope.