Infantry Weapons

M67 90 mm recoilless rifle

The M67 is a U.S.-origin 90 mm recoilless rifle designed as a portable direct-fire weapon against armor, fortifications, and troops in the open. In the Battle of Marawi context, reporting on Maute and allied IS-inspired fighters identified 90 mm recoilless rifles, or 90-RRs, as antitank weapons used against Philippine armored vehicles in dense urban fighting.

Conflict side
IS-aligned militants
Built by
U.S. government productionKia Motors
Built in
United States; South Korea

Profile

Type
Crew-served 90 mm recoilless rifle
Conflict side
IS-aligned militants
Origin
United States
Service note
Entered service in 1959; remained in limited service with several operators into the 21st century
anti-tankportablerecoilless rifle

Service History

In service
Entered U.S. service in 1959; later retained or produced in limited service by several allied operators
Used by
IS-aligned militants in Marawi, United States Army, Republic of Korea armed forces
Wars
Battle of Marawi, Vietnam War

Production History

Designer
United States
Designed
1950s
Built by
U.S. government productionKia Motors
Built in
United States; South Korea
Unit cost
Not publicly standardized
Produced
Late 1950s through late 1980s or later for licensed South Korean production
Number built
Produced in large numbers
Variants
M67, KM67, EM67

Specifications

Caliber
90 mm
Crew
Normally 3: gunner, loader, and ammunition bearer
Weight
17 kg empty with sight; 21.2 kg with HEAT round
Length
1,346 mm
Operation
Smoothbore breech-loaded recoilless rifle with significant backblast
Sights
3x M103 or M103A1 optical sight
Practical range
About 300-400 m depending on ammunition
Rate of fire
2 rounds per minute practical; 1 round per minute sustained
Penetration
M371A1 HEAT round cited at about 350 mm RHA or 0.8 m concrete

Conflict Usage

Battle of Marawi
Side: IS-aligned militantsRole: Anti-armor ambush and direct-fire supportanti-tankstrike

Inquirer reporting from Marawi identified 90 mm recoilless rifles, commonly called 90-RRs, among the antitank weapons used by IS-inspired fighters against Philippine armored vehicles; the source supports the 90 mm recoilless-rifle class, while M67/KM67 background sources identify the standard 90 mm recoilless-rifle family represented here.

M67 90 mm recoilless rifle Images

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Sources