Halo Infinite Peripheral In-Game Rewards

I was looking to purchase some of the Halo Infinite peripherals just to snag those sick looking coatings and emblem, but I had a question.

The website (https://www.razer.com/campaigns/halo-infinite) says that the Halo Infinite edition Blackshark V3 comes with the "Deathly Poison Weapon Coating", and shows a picture of the Battle Rifle with said coating applied. My question is: Is this coating just for the Battle Rifle, or can it be applied to any weapon in Halo Infinite? I know for sure I will be buying the Kaira Pro for that amazing armor coating of the same name, Deathly Poison, but I do not know if I wanna purchase another whole keyboard if it only comes with a coating for one weapon. Please let me know if it does or doesn't when you can, thank you very much.