M4 Carbine Gas Tube
A stainless steel gas tube designed for the M4 carbine, a military assault rifle under heading 9301. It channels propellant gases from the barrel to cycle the action. Classified under 9305.91.30.30 as a part of military weapons.
Import Duty Rates by Country of Origin
Alternative Classifications
This product could be classified differently depending on its characteristics or intended use.
If for shotguns or civilian rifles
Parts for non-military firearms of 9301 (sporting) fall under separate subheading.
If imported as generic tube without military markings
Basic steel tubes without specific firearm function classified by material in Chapter 73.
If classified primarily as pump mechanism
Gas operating systems may shift to machinery parts if not specifically military weapon accessory.
Not sure which classification is right?
The Tariff Assistant works through the GRI rules on your specific product to reach the right HTS code — and can price the duty on it in the same conversation.
Import Tips & Compliance
• Obtain ITAR export license from parent country and ensure US State Department registration for defense articles
• Provide detailed technical specs and end-user certificates to verify military weapon compatibility
• Avoid misclassification as sporting parts; military designation triggers stricter controls
Related Products under HTS 9305.91.30.30
AR-15 Military Trigger Assembly
A mil-spec trigger group with hammer, sear, and disconnector for select-fire AR-15 pattern rifles used by military forces. Enables firing mode selection per DoD standards. Falls under 9305.91.30.30 for parts of heading 9301 military weapons.
M240 Machine Gun Barrel
Chrome-lined quick-change barrel for the M240 7.62mm machine gun (heading 9301 military weapon). Features carrying handle and gas block. Classified in 9305.91.30.30 as military weapon part.
M16 Rifle Bolt Carrier Group
Full-auto rated BCG with bolt, carrier, firing pin, and gas key for M16/M4 military rifles. Phosphate-coated per mil-spec. 9305.91.30.30 coverage for heading 9301 parts.
M249 SAW Feed Tray
Precision stamped steel feed tray for M249 Squad Automatic Weapon belt-fed system (military heading 9301). Guides 5.56mm linked ammunition. Specific to 9305.91.30.30 military parts.
AK-47 Pattern Pistol Grip
Military-grade polymer pistol grip for AK-47/AKM rifles (NATO-recognized military weapons of 9301). Features metal reinforcements and mounting hardware. 9305.91.30.30 classification.
M1A1 Thompson SMG Magazine Well
Stamped steel magazine guide and well housing for WWII-era M1A1 Thompson submachine gun (heading 9301 military). Ensures 30-round stick magazine alignment. Under 9305.91.30.30.