Cartoons Were Right? Bending a Rifle’s Barrel Backward Will Actually Redirect a Bullet!
Confirming that at least some of the outlandish physics you see demonstrated in cartoons is accurate, when the rifle was fired remotely, the bullet exited the barrel at its business end, destroying the weapon’s sight in the process.
The Germans made some rifles with curved barrel attachments in World War 2. It was called the Krummlauf device, IIRC. They were meant to be useful in street fighting and for tank crews. Being German, they also developed a periscopic sight to go with it. They did not see much actual use.