AT-4

AT-4
Name	AT-4
Origin	Sweden
Type	Shoulder-fired anti-tank weapon
Service	1987–present
Used by	See "Users and Global Distribution"
Designer	Försvarets Materielverk / Spuhr AB
Manufacturer	SAAB Bofors Dynamics / BAE Systems
Weight	6.7 kg
Length	980 mm
Cartridge	84 mm projectile
Caliber	84 mm
Range	300 m effective
Max range	1,000 m

AT-4 The AT-4 is a single-shot, disposable, shoulder-fired anti-armor weapon originally developed in Sweden and fielded by numerous armed forces and security organizations worldwide. It was introduced in the late 20th century and has been used in a variety of conflicts and peacekeeping operations involving nations such as United States, United Kingdom, Canada, Australia, France, Germany, Norway, and Netherlands. The system is noted for its simplicity, portability, and varied warhead options which have been employed against armored vehicles, fortifications, and light structures in theaters from Afghanistan to Iraq.

Design and Development

Design work began within Swedish defense establishments linked to Försvarets Materielverk and industrial partners including SAAB and legacy divisions that later became BAE Systems Bofors and BAE Systems; prototypes were evaluated alongside contemporary projects such as LAW 80 and RPG-7 upgrades. Influences can be traced to Cold War era studies occurring in the context of NATO planning bodies including SHAPE and procurement dialogues with countries like United States Department of Defense and Ministry of Defence (United Kingdom). Early trials took place at ranges near test ranges associated with Grafenwöhr Training Area and Hohenfels; feedback from units such as Swedish Army and experimental detachments from Royal Marines informed ergonomics, sighting, and combustible launch tube design. Collaborative development involved engineers from firms that later linked to Saab Bofors Dynamics and export negotiations with authorities including US Army Materiel Command and Defence Research and Development Canada.

Technical Specifications

The launcher is a lightweight, preloaded, single-use tube constructed with composite materials and designed for one-handed carry similar in role to M72 LAW and compact systems like Panzerfaust 3. Primary warhead types include HEAT, tandem-charge, and HEDP variants compatible with sighting options from optical to night-vision mounts used by units such as 101st Airborne Division and 3rd Battalion, Parachute Regiment. Sight systems have been integrated with accessories from manufacturers associated with Aimpoint AB, Trijicon, and night-vision suppliers known to supply USMC units. Firing safety, backblast patterns, and ballistic characteristics were calibrated to conform with doctrines practiced by formations including 1st Armored Division and Royal Canadian Regiment. Typical performance metrics—muzzle velocity, penetration against Rolled Homogeneous Armor—were measured in trials similarly conducted by laboratories akin to DSTL and Armaments Research Department.

Operational Use and Service History

The weapon entered service with several NATO and allied forces during the late 1980s and 1990s and saw deployment in conflicts involving coalition forces in Gulf War (1990–1991), War in Afghanistan (2001–2021), and Iraq War. Units such as US Army Rangers, Special Air Service, Canadian Special Operations Regiment, Australian SASR, and many conventional infantry battalions utilized the system in urban, desert, and mountain environments. It has been issued to police and security formations during operations in locales like Kosovo under KFOR and in support missions coordinated by NATO. Training and logistics chains involved establishments such as Fort Bragg, Catterick Garrison, Petawawa, and procurement agencies like Defense Logistics Agency and national ministries including Ministry of Defence (Australia).

Variants and Modifications

Multiple variants were produced to address evolving battlefield requirements, including anti-armor HEAT types, tandem-charge designs for reactive armor defeat used against threats like T-72 and T-90 series, and HEDP rounds for use against bunkers and light vehicles. Specialized launch tubes with improved sights and reduced backblast were developed alongside conversion kits for use with integrated fire-control systems fielded by brigades such as 1st Infantry Division. Exported versions were adapted with environmental and safety modifications to meet standards in markets like Japan, South Korea, and NATO countries including Italy and Spain. Upgrade packages paralleled modernization efforts seen in programs like Project Land 125 and procurement initiatives managed by agencies such as NATO Support and Procurement Agency.

Users and Global Distribution

The system was procured by over fifty countries and non-state security actors, appearing in inventories of nations across Europe, the Americas, Asia, Africa, and Oceania. Notable operators included United States, United Kingdom, Canada, Australia, France, Germany, Norway, Netherlands, Sweden, Finland, Denmark, Poland, Greece, Turkey, Israel, Lebanon, Saudi Arabia, United Arab Emirates, Brazil, Chile, Colombia, Argentina, Peru, Mexico, Japan, South Korea, Republic of China (Taiwan), India, Pakistan, Bangladesh, Philippines, Thailand, Malaysia, Singapore, Indonesia, Egypt, Morocco, Algeria, South Africa, Kenya, Nigeria, Ethiopia, Ghana, Somalia, Ukraine, Belarus, Romania, Bulgaria, Czech Republic, Slovakia, Hungary, Croatia, Slovenia, Lithuania, Latvia, Estonia, Iceland, Ireland, Portugal, Spain, Italy, Cyprus, and Malta. Distribution channels included government-to-government sales, foreign military sales like those administered by Foreign Military Sales, and licensed production agreements with companies linked to BAE Systems and regional defense contractors.

Performance and Effectiveness

Operational assessments by procurement agencies and combatant commands such as United States Central Command, European Union Military Staff, and national defense research organizations reported effective use against light armor, fortifications, and urban strongpoints when employed within engagement doctrine constraints drawn up by formations like Infantry Division headquarters and special operations command elements. Comparative trials against systems such as RPG-7, M72 LAW, and Panzerfaust 3 highlighted advantages in portability and ease of training for conscript and professional forces alike; limitations included single-shot nature and backblast hazards noted in after-action reports from engagements in Fallujah and Helmand Province. Modern conflicts and armor developments prompted continuous evaluation by laboratories and institutes like Jane's Information Group and national research centers leading to incremental improvements and adoption of complementary systems by many armed forces.

Category:Infantry weapons