M4 Carbine Upper Receiver Assembly from Mexico
This upper receiver assembly is a key part specific to M4 and M16 rifles, classified under HTS 9305.91.10.00 as a part of military rifles from heading 9301. It includes the barrel, handguard, and bolt carrier group designed exclusively for these military weapons.
Duty Rate — Mexico → United States
10%
Rate breakdown
9903.05.5510%Except for products described in headings 9903.05.85–9903.05.92 and 9903.05.94, articles the product of Mexico, as provided for in U.S. note 52 to this subchapter
Import Tips
• Obtain ITAR export licenses from origin country and ensure ATF compliance for military rifle parts
• Provide detailed blueprints and end-user certificates to verify military rifle specificity
• Avoid misclassification as civilian parts; common pitfall leads to seizures at customs