Most metals can be engraved. Some (such as knife blades) can be so hard, that it is nearly impossible, or extremely time-consuming (expensive). Give me a call – 406-586-1350, or email me at email@example.com with questions.
Glock 23 with a stainless aftermarket slide and Blackleaf Scroll that won “Best Engraved Modern Firearm” at the Firearm Engravers Guild of America 2019 Convention
The Glock 23 wearing a new Cerakote color – Flat Dark Earth Tan