It's an accessory, there's no paper to be had.
This would be like requesting permission to put a light on your pistol.
The paper you have for your "other" doesn't make it legal anyway. It's not a legally binding document.
What is your application?
There are stand alone illuminators from great companies that are more than half the price, and go well beyond 100 yards. Surefire makes the v1 vampire that was tested to 150yards and is well under 300 bucks.
Nice... I have an RDO slide. I've been trying to get my hands on an SRO, but every time I get notified of one in stock I miss out. Eventually I'll get one. I did shoot a couple of boxes with an optic I got for another pistol, but can't wait to get something permanent for the Beretta.