Actually, Robar's NP3 PLUS is the very best finish there is. NP3 PLUS is many times more durable than anything else that's available.
It's certainly not as durable as Melonite or whatever you want to call it. I have worked on too many Glocks over the years as well as dozens of NP3 treated duty weapons. Melonite is harder than anything but carbide and diamond, no dimensional change and doesn't rub off- ever. Comes in any color you want as long as you want black...
