Need some opinions/ advice from some of you "gun hands"

No, it's no that simple... It should be, but it's not. If you are in a situation in which you actually need to do this...

https://www.atf.gov/firearms/firear...rms-ammunition-firearms-verification-overview
Federal law provides certain standards for serializing a firearm. States like California, which require serialization, have adopted those same federal standards. To meet the standards, your 80% lower, frame, or receiver's markings must:

• Be engraved at least 0.003" into the material.
• Have a minimum text size of no less than 1/16" in height.

The engraved markings must include the following information:

• Model of the firearm (if chosen or described)
• City and state of manufacture (where you live)
• Caliber or gauge of the firearm (cannot be "MULTI")
• Manufacturer's first and last name (that's you)