HS code · 6-digit subheading
HS Code 9305.91 – Firearms; parts and accessories, of military weapons of heading 9301
HS code 9305.91 is the 6-digit subheading for firearms, parts and accessories, of military weapons of heading 9301. It is used for machine gun barrels, assault rifle receivers, grenade launcher sights, armored vehicle weapon mounts and specialized military optics.
What HS 9305.91 covers
This highly sensitive HS code covers parts and accessories exclusively designed for military weapons classified under heading 9301, which includes tanks, artillery, machine guns, and assault rifles. This encompasses specialized components such as machine gun barrels, assault rifle receivers, grenade launcher sights, armored vehicle weapon mounts, and advanced military optics. International trade in these items is almost exclusively government-to-government or between authorized defense contractors, operating under the most stringent international arms control treaties and national export/import licenses. The primary concern is preventing diversion to unauthorized users or regions, making end-user certificates and robust verification processes mandatory. Due to their strategic importance and potential for conflict, these goods are subject to intense scrutiny and strict regulatory oversight by international bodies and national governments.
- Covers
- Machine gun barrels
- Assault rifle receivers
- Grenade launcher sights
- Armored vehicle weapon mounts
- Specialized military optics
- Weapon system components
- Full-auto triggers
- Examples
- M16/AR-15 lower receivers (military spec)
- FN Minimi barrels
- EOTech holographic sights (military variants)
- specific weapon system components from BAE Systems
Codes often confused with 9305.91
Common mistake. Frequently confused with parts for civilian sporting rifles (930520) due to similar platforms (e.g., AR-15 variants), but distinguished by military specifications, full-auto capability, or specific design for military use.
Top exporters and importers of HS code 930591, 2025
In 2025, the largest exporter of HS code 930591 in UN Comtrade data was the United States, with 34% of world exports; the largest importer in UN Comtrade data was the United States, with 23% of world imports. Türkiye reports $4.0B of its chapter 93 exports without product detail (confidential), so it may also belong among the top exporters.
Top exporters 2025 · share of world exports
- 1 United States $580M 34% of world exports
- 2 South Korea $440M 26% of world exports
- 3 Norway $142M 8.4% of world exports
Türkiye reports $4.0B of its chapter 93 exports without product detail (confidential), so it may also belong among the top exporters.
World total: $1.7B Reported figures on UN Comtrade ↗
Top importers 2025 · share of world imports
- 1 United States $363M 23% of world imports
- 2 Japan $212M 13% of world imports
- 3 Poland $160M 10% of world imports
World total: $1.6B Reported figures on UN Comtrade ↗
How these figures are built
109 countries reported 2025 trade to UN Comtrade in HS 2022, and their own totals are used. Countries that did not report are estimated from what other countries recorded trading with them. Those estimates miss trade with other non-reporting countries, so they can be low, and a non-reporting country can rank higher than shown or be missing from the list. World totals add both and leave out trade between two non-reporting countries. Figures are in current US dollars; reported imports are mostly valued CIF and exports FOB, and exports include re-exports. The UN Comtrade links show the underlying records; they can also list a few reporters left out here (regional groups and older HS editions).
Source: UN Comtrade (United Nations Statistics Division), 2025 annual data.
Brazil NCM code for 9305.91
Brazil does not split HS 9305.91: its NCM code is 9305.91.00.
All Brazil NCM codes in heading 93.05 →
Source: Siscomex NCM table, updated Oct 2026. The Portuguese text is official; the English is our translation.
Questions about HS 9305.91
What is HS code 930591?
HS code 930591 is a 6-digit subheading in the Harmonized System that covers: Firearms; parts and accessories, of military weapons of heading 9301. This highly sensitive HS code covers parts and accessories exclusively designed for military weapons classified under heading 9301, which includes tanks, artillery, machine guns, and assault rifles. This encompasses specialized components such as machine gun barrels, assault rifle receivers, grenade launcher sights, armored vehicle weapon mounts, and advanced military optics. International trade in these items is almost exclusively government-to-government or between authorized defense contractors, operating under the most stringent international arms control treaties and national export/import licenses. The primary concern is preventing diversion to unauthorized users or regions, making end-user certificates and robust verification processes mandatory. Due to their strategic importance and potential for conflict, these goods are subject to intense scrutiny and strict regulatory oversight by international bodies and national governments.
What products fall under HS code 930591?
Machine gun barrels, assault rifle receivers, grenade launcher sights, armored vehicle weapon mounts, specialized military optics, weapon system components, full-auto triggers
What are common misclassifications for HS code 930591?
Frequently confused with parts for civilian sporting rifles (930520) due to similar platforms (e.g., AR-15 variants), but distinguished by military specifications, full-auto capability, or specific design for military use.
Which countries are the top exporters of goods under HS code 930591?
In 2025, the top exporters of HS code 930591 in UN Comtrade data were the United States ($580M, 34% of world exports), South Korea ($440M) and Norway ($142M). World exports came to about $1.7B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Türkiye reports $4.0B of its chapter 93 exports without product detail (confidential), so it may also belong among the top exporters.
Which countries are the top importers of goods under HS code 930591?
In 2025, the top importers of HS code 930591 in UN Comtrade data were the United States ($363M, 23% of world imports), Japan ($212M) and Poland ($160M). World imports came to about $1.6B, adding countries' reported figures and partner-based estimates for those that did not report (UN Comtrade data). Countries that did not report 2025 data are estimated from partner records, which can understate them.
How is HS code 930591 structured?
HS code 930591 is a 6-digit subheading under the Harmonized System. The first 2 digits (93) identify the chapter, digits 3-4 (05) identify the heading, and digits 5-6 (91) specify the subheading. This code is standardized globally by the World Customs Organization.
What is the Brazil NCM code for HS code 930591?
In Brazil, HS code 930591 is NCM 9305.91.00. The last two digits are 00 because Brazil does not split this HS code further.