This subtitle applies to any sale or transfer of ownership that occurs in the course of a commercial transaction for which: The buyer takes physical possession of the covered animal species part or product in the State; or The seller is located in the State. This subtitle does not apply to: Federal or State law enforcement activity; Duties mandated by federal or State law; Activity expressly authorized by federal law; or A covered animal species part or product that is a fixed component of: An antique that is not made wholly or primarily from the covered animal species part or product, provided that: The antique status is established by the owner or seller through documentation showing provenance and that the covered animal species part or product is at least 100 years old; and The total weight of the covered animal species part or product is less than 200 grams; or A musical instrument, knife, or firearm, provided that: The covered animal species part or product was legally acquired; The covered animal species part or product is a fixed or integral part of the item; and The total weight of the covered animal species part or product is less than 20% of the total weight of the musical instrument, knife, or firearm.