>>63956826Liu, P., Jin, W., Shi, Z., Wang, Y., & Zhao, X. (2024). Research on the recoil reduction efficiency of a recoilless launch gun with high projectile velocity. Journal of Physics: Conference Series, 2891(12), 122027. https://doi.org/10.1088/1742-6596/2891/12/122027
tl;dr it's a recoilless caseless rifle intended for mounting on drones. The new invention (to /k/) is using an electronic chip fired by induction instead of a traditional chemical primer.