Users
- Australia: M2 replaced by M3 variant.
- Austria
- Belgium
- Belize
- Botswana
- Brazil
- Burkina Faso
- Canada
- Czech Republic
- Denmark: M2 called M/79, M3 called M/85. Commonly referred to as "Dysekanon" in the army.
- Estonia: M2, M3, and M4.
- Germany
- Ghana
- Greece
- Honduras
- India: A modified version has also been developed by the DRDO which is significantly lighter due to use of advanced composites.
- Indonesia: Used by the Komando Pasukan Katak (Kopaska) tactical diver group and Komando Pasukan Khusus (Kopassus) special forces group.
- Ireland
- Israel
- Japan: M2 called 84 mm Recoilless Rifle.,M3 called multi-purpos gun (多用途ガン?)'
- Kenya
- Libya
- Lithuania: Lithuanian Armed Forces.
- Malaysia
- New Zealand
- Nigeria
- Norway
- Pakistan
- Poland: Used by special forces.
- Portugal: Used by the Portuguese armed forces.
- Sierra Leone
- Singapore
- Sweden
- Tamil Eelam: Used by the Tamil Tigers during the Final Eelam War.
- Thailand
- United Arab Emirates
- United Kingdom: M2 variant was used from the 1970s until the early 1990s.
- United States of America: Used by USSOCOM, U.S. Army Ranger battalions and some regular U.S. Army infantry units in the War in Afghanistan.
- Zambia
Read more about this topic: Carl Gustav Recoilless Rifle