Maarg Manthan · Topic 16.17

3D-Printed Munitions and Lethal Autonomous Weapons

Science & Technology › Defence Technology and Missile Systems · Topic 16.17

Additive manufacturing, or 3D printing, builds objects layer by layer from a digital design using plastics, metals or composites. In defence it is used to make spare parts, drone bodies, tooling, casings and prototype parts of munitions, and even field shelters, near the place where they are needed, which shortens supply lines. Lethal autonomous weapon systems, LAWS, are weapons that, once activated, can select and engage targets without further human intervention. Examples range from automatic air defence guns to loitering munitions and armed drones with target recognition. They raise legal, ethical and security concerns, and since 2014 states have discussed them at the Convention on Certain Conventional Weapons in Geneva. The United Nations General Assembly adopted a first resolution on them in December 2023.

5 min read · UPSC Prelims · Science & Technology · Defence Technology and Missile Systems

At a Glance

3D printing Layer by layer making
LAWS Select and attack without human input
Forum CCW Group of Governmental Experts
UN step UNGA resolution, December 2023
Key concept Meaningful human control
Exam link UPSC Prelims, Science & Technology: Defence Technology and Missile Systems

Where Does It Fit?

This topic follows the account of cyber warfare. It covers two emerging military technologies, one changing how weapons are made and the other how they are used, and links to the earlier topics on drones and artificial intelligence. Previous topic: Cyber Warfare Preparedness. Next topic: Air Defence Systems.

How Is 3D Printing Used in Defence?

Use	Details
Spare parts	Printing of obsolete or rare parts for aircraft, ships and vehicles near the user, saving time and storage
Drones	Printed airframes and parts allow cheap, quick production and design change
Munition components	Casings, fuze parts, rocket motor parts and tailored fragmentation. Printing of full warhead explosives is under research and tests in some countries
Improvised use	In the Russia-Ukraine war, printed grenade and bomb fins and holders for drones were widely made in small workshops
Field manufacturing	Printers in containers at bases or on ships can make parts in the field
Construction	3D printed shelters and bunkers, and a printed post building has been tried by the Indian Army in recent years, which should be checked
Concerns	Printed firearms and parts raise problems for arms control, because plans spread on the internet

What Are Lethal Autonomous Weapon Systems and Why Are They Debated?

Definition: weapons that can select and attack targets without human intervention once switched on; there is no agreed international definition
Levels of control: human in the loop (a human decides), on the loop (a human can stop) and out of the loop (fully autonomous)
Examples: radar-guided close-in weapons on ships, Israeli Harop loitering munitions, South Korean sentry guns, and Turkish Kargu-2, which a UN panel report in 2021 said may have attacked targets autonomously in Libya in 2020
Arguments for: faster reaction, fewer soldiers at risk, no fatigue or anger
Arguments against: no human judgement of proportionality and distinction, accountability gap, risk of errors and escalation, bias, and lower cost of war
CCW process: states have met at the Convention on Certain Conventional Weapons in Geneva since 2014 and a Group of Governmental Experts since 2016 to discuss LAWS, without a binding agreement
UN General Assembly: adopted its first resolution on LAWS in December 2023, with a large majority; India was reported among the few states that voted against, preferring the CCW forum
Campaigns: the Stop Killer Robots campaign and the International Committee of the Red Cross call for new binding rules

What Else Should You Remember?

Meaningful human control: the idea that people must keep enough control over the use of force
International humanitarian law: weapons must distinguish combatants from civilians and be proportionate, and humans stay responsible
Martens Clause: a principle that protects civilians under the principles of humanity when no specific rule exists
Autonomy spectrum: many systems are only partly autonomous
Swarms: large groups of drones with common software
India’s position: India says existing international law applies, favours talks at the CCW and has opposed a pre-emptive ban; check the latest position
Indian additive manufacturing: DRDO, ordnance firms and private industry use metal 3D printing for aerospace parts
National Strategy on Additive Manufacturing: released by the Ministry of Electronics and Information Technology in 2022 to make India a global hub
Materials: metal powders and polymers
Quality assurance: printed parts need certification for safety
Supply chain security: digital designs can be stolen or tampered with
Arms control: export controls on printers and designs
Ghost guns: untraceable printed firearms raise law enforcement problems
Arms Act: Indian law bans making firearms without a licence
Link: drones are in Unmanned Aerial Vehicles (UAVs) and Drone Technology
Link to AI: AI use in forces is in Robotics, AI and Internet of Military Things (IoMT) in Defence
Technology race: states fear being left behind if rivals deploy such weapons

Why Does It Matter for the Exam?

3D printing: spares, drones, shelters
LAWS: definition, levels of control
Forum: CCW GGE and UNGA 2023
Current affairs link: AI weapons talks
Common errors: saying LAWS are banned by treaty or that a remote controlled drone is autonomous

As an analytical point, 3D printing makes defence supply chains flexible and widely available, while autonomous weapons challenge the idea of human responsibility in war. Law and ethics have to keep pace with technology.

Why Is This Topic Important?

Printing Spares and drones
LAWS Autonomy levels
Debate Human control

What Came Next?

The next topic covers air defence systems. Next topic: Air Defence Systems.

Key People and Terms

Additive manufacturing Layer by layer making
LAWS Lethal autonomous weapon systems
CCW Convention on Certain Conventional Weapons
GGE Group of Governmental Experts
Human in the loop Human approves each attack
Meaningful human control Adequate human control over force

Exam Corner

Points to Remember

CCW talks on LAWS since 2014; GGE since 2016.
UNGA resolution: December 2023.
India’s AM strategy: 2022.
Kargu-2: UN panel report 2021.
No binding treaty on LAWS yet.

Do Not Confuse With

Autonomous and remote controlled Machine selects targets versus human operates
In the loop and on the loop Human decides each time versus can stop
3D printing and ghost guns Technology versus untraceable firearm made with it

Memory Hook

Print the part, but keep the human in the loop; CCW talks, no treaty yet.

Mains Angle

Questions ask for definitions and international forums. These points help.

Uses Defence supply
LAWS Debate
Rules CCW

A Question You May Face

An original practice question, not a past paper question.

“Discuss the legal and ethical issues raised by lethal autonomous weapon systems and the role of emerging manufacturing technologies in defence.”

How to Answer

Technologies Printing, LAWS.
Issues Law, ethics.
Forums CCW, UNGA.
India Position.

GS Relevance

Prelims: additive manufacturing uses, LAWS definition, CCW, debate. GS Paper 3: defence technology; GS Paper 2: international institutions; GS Paper 4: ethics of technology.

Frequently Asked Questions

What are lethal autonomous weapon systems?

Lethal autonomous weapon systems are weapons that can detect, select and attack targets on their own after activation, without further human intervention. They differ from remote controlled weapons, where a human decides each attack. There is no agreed definition, and many existing systems have only limited autonomy.

Are autonomous weapons banned?

No treaty bans lethal autonomous weapons at present. States have discussed them at the Convention on Certain Conventional Weapons in Geneva since 2014, and the UN General Assembly passed its first resolution on them in December 2023, but countries remain divided on whether to negotiate binding rules.

What is meaningful human control?

Meaningful human control is the idea that people must keep enough understanding of and influence over a weapon system so that legal and moral responsibility for the use of force stays with humans. It is central to the debate on autonomous weapons and is supported by many states and the Red Cross.

How is 3D printing used in the military?

Militaries use 3D printing to make spare parts, drone bodies, tools, prototypes and some munition components near where they are needed, which shortens supply chains. It is also used for shelters, and small groups have used it to make simple munition parts, which raises arms control concerns.

What is India's view on autonomous weapons?

India says that international humanitarian law applies to new weapons and prefers discussion at the Convention on Certain Conventional Weapons, not a new treaty negotiated elsewhere. It has been cautious about a pre-emptive ban, and was reported to have voted against the 2023 UN General Assembly resolution.

PYQ Practice — Statement Analysis

1 A binding international treaty bans lethal autonomous weapons.

False

No such treaty exists.

2 Talks on LAWS take place under the CCW.

True

In Geneva.

3 3D printing can make spare parts near the point of use.