CRN

CRN coating, is a type of PVD (physical vapor deposition) coating known for their high hardness, toughness, and resistance to wear, corrosion, and oxidation, making them suitable for various applications. Also can be referred to as Chromium Nitride. 

CRN is a light-greyish/white tone finish with a hardening feature so that your parts, and/or firearms stay protected, durable, and rust free. 

We do suggest that you add coating to your slide, however we do not make you, that is your decision. Stainless slides do not need coating as much as carbon steel slides do. Both can rust (yes stainless can rust) it all depends on the grade of metal and the conditions in which the slide is in and put through.

We also no longer offer a cold bluing solution. If you choose to not have a coating on your milled slide, it will be returned back to you milled and oiled. By purchasing this product you agree to these terms and conditions. We are not responsible if your slide rusts or corrodes when selecting no coating