Users
- Indonesia: Komando Pasukan Katak (Kopaska) tactical diver group and Komando Pasukan Khusus (Kopassus) special forces group.
- Malaysia: MK23 Mod 0 adopted by Pasukan Gerakan Khas Counter-terrorism Police Squad of the Royal Malaysia Police.
- Poland: Used by GROM.
- United States: Adopted by US SOCOM. Deliveries commenced in 1996.
Read more about this topic: Heckler & Koch Mark 23