Mil-Spec or Commercial spec, this castle nut will secure the receiver extension and end plate to the lower receiver. Made from the best US Steel, and proudly manufactured in America, this castle nut will give you years of problem free services.

Specifications and Features:
Manganese Phosphate Finish
Outstanding Wear Resistance
Fits Commercial or Mil-Spec Buffer Tubes
Made in the USA
Black

Note: This product is new and being closed out; sold "As Is" and is not returnable to Cheaper Than Dirt. Please contact the manufacturer for warranty and assistance.