Mil-spec receiver lock ring / castle nut. For use on AR15 and AR10 carbines with an adjustable stock. The lock ring / castle nut has phosphate finish for maximum corrosion and wear resistance.
This part is perfect for your new build or as direct replacements for a worn out part.
|Manufacturer||Ground Zero Precision|
|Country of Origin||United States of America|
|Platform||AR15 & AR10 Carbine|
Previous SKU: GZP-CAR-CAST-NUT