“The castle nut was not threaded on the inside- no threads. Arm or Ally contacted AERO PRECISION who are sending a new one within a week, so I ended up buying one locally for another $10. Just disappointing to have to stop the build.”
We're sorry to hear you receive a defective part. Unfortunately we do not stock individual castle nuts. Aero Precision was prompt and had a castle nut on the way within a couple of days.
“These are very high quality and finished parts for a 308. The mil-spec materials is of the highest quality. Fit is perfect. No flash or burrs or unsightly flaws. Excellent quality, like all the Aero products I've used.”