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Secure stake: LBE Unlimited Castle Nut for AR-15 Manganese Phosphate coated 4140 steel. Model ARCNUT (UPC: 765857617329).
Mil-spec thread; stake slots. Torque tough.
End plate lock; buffer tube. Build essential.
Nut nailed.
"LBE Unlimited AR-15 castle nut manganese phosphate 4140 steel". Lock loyal.
ARCNUT: Castle core.
The End