Aluminum Castle Nut for AR .223/5.56/.308 Buffer Tube Receiver End Plates [ABNT03]

Aluminum Castle Nut Locking Ring for AR Buffer Tube -[ABNT03]

- High Quality 7075-T6 Aluminum

- Anodized Black

- Fits AR .223/5.56 / .308 (Mil-Spec, Pistol, Commercial, Carbine)