TACFIRE MAR039 AR15 MILSPEC CASTLE NUT
$3.99
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TACFIRE MAR039 AR15 MILSPEC CASTLE NUT
$3.99
TacFire MAR039 Castle Nut Black Steel for AR-15 Buffer Tube
TacFire Official AR15 Castle Locking Nut for .223/5.56 Rifle carbine stock used to tighten buffer tube to receiver.