As I understand it (from an industry insider), yes. Lauer Arms just has it packaged in smaller containers, and branded under their name. Apparently, looking at the MSDS sheets, they are identical (and how it was discovered by some industry service providers). Not surprising, as Lauer never states that they make it themselves.
I suspect that's why Lauer (years back) wouldn't warranty the coating unless it was by an "Approved and Certified Duracoat" dealer (who had to attend their "classes" and agree to only use their products). I think people found out, and were offering "Duracoat" services, but were using industrial Polane instead, bypassing Lauer's mark up, buying the product in bulk, but using Lauer's "Duracoat" branding in advertising their services.
Since then Cerrokote has surpassed Duracoat in durability, so Durakote has fallen a bit out of favor. But make no mistake, it's still a very good coating. I[ve used it on several chassis and magazines, and while it does scratch easier, it's still pretty tough stuff.
ETA: For the clear coating, you're probably looking for "Polane L".