Birchwood Casey Aluminum Black pointers?

I'm going to help a friend work on used .22 Henry she was given by her sister. It looks to me like the gun was exposed to salt water because it has some pretty significant corrosion on the receiver and some of the other aluminum parts. The blued barrel is in surprisingly good shape and I think

Birchwood Casey Perma-Blue 8 Piece Kit Including Liquid Bluing, Cleaner Degreaser, and Rust Remover. Includes All Application Tools.

Project RO727 - Birchwood Casey Aluminum Black - Hotel Whiskey

Aluminum™Black Metal Finish, 3 fl. oz. Bottle - Birchwood Casey

Birchwood Casey Fast-Drying Fast-Acting Aluminum Black Metal Finish Touch-Up Pen for Restoring Scratched and Marred Areas : Sports & Outdoors

BIRCHWOOD CASEY STAR CHAMBER CLEANING PADS 100PK - Brownells UK

Birchwood Casey Aluminium Black

Birchwood Casey Fast-Drying Fast-Acting Aluminum Black Metal Finish Touch-Up Pen for Restoring Scratched and Marred Areas : Sports & Outdoors

Birchwood Casey Super Blackâ„¢ Touch-Up Pen (gloss black) 0.33 ounce – BushWear

Perma Blue 3 oz liquid - Jantz Supply

Back in Black: Birchwood Casey's black oxide

Birchwood Casey Aluminum Black pointers?

Birchwood Casey Fast-Drying Fast-Acting Aluminum Black Metal Finish Touch-Up Pen for Restoring Scratched and Marred Areas : Sports & Outdoors

Update on Birchwood Casey aluminum black on thunder tactical a2 upper : r/RetroAR

Birchwood Casey Aluminum Black Touch-Up 3 Oz : Hunting Cleaning And Maintenance Products : Sports & Outdoors