Both platforms have seen wide use, but the Steyr AUG had a much longer record of use and not by just the two well-known users (Austria & Australia).
The Steyr AUG has been used in the following conflicts:
- Gulf War
- Somali Civil War (by Unified Task Force, 1993)
- 1999 and 2006 East Timorese crise
- Militias-Comando Vermelho Conflict
- Syrian Civil War
- War in Iraq
- Papua conflict
- 2022 Russian invasion of Ukraine
- Algeria: Special Intervention Detachment
- Argentina: Argentine Armed Forces.
- Australia: A variant, the Austeyr F88, is the standard rifle of the Australian Defence Force. It is manufactured, under licence from Steyr-Mannlicher, by Thales Australia.
- Austria: Standard weapon of the Bundesheer, serving as the StG 77 in official army nomenclature.
- Central African Republic
- Croatia: Used by the Croatian Special Forces.
- Indonesia: Used by Komando Pasukan Katak (Kopaska) tactical diver group and Komando Pasukan Khusus (Kopassus) special forces group.
- Ireland: Standard service rifle of the Irish Defence Forces. The Army Ranger Wing special forces uses the Steyr AUG A2 and A3.
- Italy: Carabinieri Special Forces: Gruppo di Intervento Speciale and 1st "Tuscania" Regiment
- Luxembourg: Standard infantry rifle of the Luxembourg Army. The HBAR variant is also employed as the section support weapon.
- Malaysia: Made under license from Steyr by SME Ordnance. Local production of the AUG rifle series started in 1991 with a joint production with Steyr that started in 2004. Lawsuits from Steyr emerged when Malaysia decided to withdraw from joint production.
- New Zealand: Used from 1988 until 2019. The first 5,000 weapons delivered were manufactured in Austria by Steyr Daimler Puch. Latter versions were the Australian ADI-made Austeyr F88 variant, locally designated IW Steyr (Individual Weapon Steyr.) From August 2015 the Lewis Machine Tools 5.56 mm MARS-L started to replace the Steyr AUG.
- Papua New Guinea: F88 variant.
- Philippines: Used by the Scout Rangers.
- Poland: JW Grom special forces group.
- Romania: Used by the Romanian Special Forces
- Saudi Arabia
- Serbia: 72nd Reconnaissance-Commando Battalion.
- Taiwan Type 68 copy
- Tunisia: The Steyr AUG has been the primary weapon of the Tunisian Army since 1978.
- Turkey: Maroon Berets.
- Ukraine: AUG HBAR is used by the Sokil Special Forces.
- United Kingdom
Falkland Islands: Falkland Islands Defence Force. Being replaced by the L85A2.
- Uruguay: Received 15,000 Steyr AUG A2UR bullpup assault rifles
- Australia: Formerly used by the Victoria Police Special Operations Group
- Austria: Used by EKO Cobra.
- Belgium: Steyr AUG Para is used by the Federal Police.
- Brazil: SMG version adopted by São Paulo Police in .40 S&W.
- Czech Republic: Steyr AUG Carbine in 9×19mm Parabellum used by several Czech police units.
- Germany: Bavarian SEK.
- Indonesia: Used by the Mobile Brigade Corps (Brimob) special forces group of the Indonesian National Police,
- Luxembourg: The Unité Spéciale de la Police intervention unit of the Grand Ducal Police employs the AUG A2 variant.
- Malaysia: Used by 69 Commando of Pasukan Gerakan Khas counter-terrorist unit of the Royal Malaysia Police.
- Timor Leste: National Police of East Timor
- Turkey: Police Special Operations Department.
- United States: U.S. Immigration and Customs Enforcement, replaced by the Colt M4.
- Venezuela: Used by SEBIN.
Regardless, both the AUG and Tavor TAR-21/X95 are options (as well as others) that find the bullpup design approach interesting.