This barrel thread protector is 5/8 x 24 thread machined from 303 stainless steel to very high quality standards on CNC lathes in my shop. It is counter bored to accommodate barrels that are not undercut at the shoulder.
Length is .625″
Outside diameter is .875 With a clean crisp knurl.
This thread protector works on most AR10 .308, 7.62, .300 Standard barrels and variants.
100% Made in the USA!
Please confirm size before ordering.