Quote Originally Posted by prepare View Post
According to H&M Metal Processing They have developed a proprietary process using lower temperature and exposure time that achieves the benefits of SBN while maintaining core hardness.
prepare, thank you for looking into this and reporting back.

Assuming what H&M says is true, now the trick is to find out which bolts have been nitrided by them using this process. My understanding (which could be wrong) is that there are not a lot of companies that do large scale nitriding on firearms parts in the U.S.

Joe Mamma