LESS THAN LETHAL AMMUNITION
The ALTERNATIVE from Alternative Ballistics uses a bullet capture device to slow down the projectile from a normal handgun.
The bullet is fired from the barrel and impacts a silver ball mounted on the front of the ALTERNATIVE, which encases the bullet, absorbs some of the round's force, and travels with it to the target. The company calls it an airbag for a bullet. It increases the surface area of the bullet and diminishes its force, causing more pain for the target, but greatly decreasing the chance of penetration or internal injury.
The cool thing about this gadget: It can be carried in a pouch and quickly snapped onto a firearm without obscuring the sights or the rail. Once the projectile is fired, the pistol cycles as normal and the orange mount is kicked off when the slide retracts, making the pistol ready for a follow-up shot if necessary. With a modified holster, it could conceivably be carried while mounted on the pistol, always at the ready for a first shot. From there, it could be quickly removed if not needed.