Do your customers complain about thow back? 
CS Grenades generally burn 15-35 seconds plus 1-3 seconds delay, this period allows protesters enough time to grab the grenade and throw back to law enforcement officers.
So Spindle Grenade is your solution. State-of-the-art spinning technology makes it impossible to grab.
Also 17-22 seconds operation time including 1.5±0.3 sec delay to be sure almost instant discharge of the irritating CS gas.
It’s patent pending gas discharge chamber perfectly turns high pressure to a controlled movement. As a result, throw back is almost impossible.
Spinning is upside down due to perfectly located discharge holes reduces friction to increase the spinning speed.
Here is demo of the Spindle
