Magazine Extension Tube from Canada
A 12-gauge magazine extension tube increases shotgun capacity for Remington 1100, classified under HTS 9305.99.60.00 as an accessory for heading 9303 shotguns. It threads onto the factory magazine tube.
Duty Rate — Canada → United States
12.9%
Rate breakdown
9903.05.2910%Except for products described in headings 9903.05.85–9903.05.93, articles the product of Canada, as provided for in U.S. note 52 to this subchapter
Import Tips
• Declare exact capacity increase (e.g
• +2 rounds) and gauge/thread specs
• Aluminum tubes need anodizing type specification
• Note compliance with federal 922(g) parts count rules