The ACV-19 (Armored Combat Vehicle) is the general name for a class of 15-19 ton, modern high performance vehicles derived from the highly successful FNSS ACV. The vehicle was previously known as the Armoured Combat Vehicle — Stretched. The ACV-19 is a further development of the ACV-15, which is developed from the M113 series of armoured personnel carriers built by United Defense of the United States. The vehicle is in service with Turkey and has obtained export orders from Jordan, Malaysia, and the United Arab Emirates. ACV-19 offers the latest developments in high value vehicle performance for internal volume and payload but maintains the advantages of commonality with ACV family of vehicles. The ACV-19 retains the basic shape of the M113, although it is actually derived from the ACV-300, an infantry fighting vehicle derived itself from the M113
The differences between ACV-15 and ACV-19 consist primarily of a longer (stretched) hull (6 road wheels), heavy duty final drives, and more aggressive suspension. The ACV-19 offers more volume under armor, more payload capacity than ACV-15. Consequently, the ACV-19 chassis can support heavier payloads such as larger turrets, without compromising the mobility offered by ACV-15. Additionally, 90% spare parts commonality among ACV-19 and ACV-15 make maintenance more convenient for users of both variants. The ACV-19 chassis are provided with a unique, space laminated armor system combining steel and aluminum technology to provide a high level of armor protection against direct KE threats. Also, the hull provides protection against mines. the vehicle remains air-portable on many western aircraft, including the C-130 Hercules, C-5 Galaxy, C-141 Starlifter, and C-17 Globemaster III.