Idea for a weapon:
- hand held recoilless gun with caliber around ~75mm (to hit nearby, low value, easy to hit targets)
- to this weapon also anti-tank or anti-air guided rockets can be loaded (when dealing with more distant, resilient, valuable or mobile targets) Yes, they may partially stick out of the tube. (something like a bigger, guided brother of RPG)
My basic fact checking:
- normally rocket launchers (example: Stinger) use double engine anyway (first to leave the tube without burning user, second to actually deliver the projectile)
- using recoilless launch is actually doable for rocket projectile (example: RPG), but they seem to be much smaller
Would such weapon be feasible? (I wonder whether trade offs would actually be worth it or be an engineering nightmare) Yes, I know it would leave impressive backblast, this one is fine.