AKU-58 - Aircraft Ejection Device

It is intended for external suspension, transportation and provision of combat launch or emergency release of missiles of the Kh-58, Kh-59, Kh-29, Kh-31 type from aircraft of the Su-27, Su-30, MiG-27, MiG-29 type.

https://www.cgtrader.com/3d-models/military/rocketry/aku-58-aircraft-ejection-device