I don't see it.
To me, the dust cover/rail doesn't have anything to do with it.
The slide Is machined by someone other than the manufacturer and a non-OEM part is added.
Hey I've been wrong before so who knows?
I'm fairly disappointed. They could have made changes with this new rule book to allow for several new guns that would let folks shoot USPSA production and IDPA.
Also, a "non-inclusive list" means "just because it's not on the list doesn't mean it's allowed"!
Anyways, good luck.