So, you like slapping the cocking handle of your tm, ics, ca, ae etc mp5. If you do it long enough it's likely you will break the handle right off. buuuut not with this addition. That's right, never worry about your cocking handle again!!
It's a little easier on the ICS mp5 where you can unthread and remove the front of the cocking tube, the little round part right under the front sight aperture. On the TM guns you have to pop out the sling mount to remove the whole front of the assembly, including muzzle, front sight, etc. Now take a Bic pen and cut it so it protrudes out the front of the cocking tube and you can see it extend past the cocking handle slot through the slot itself. Wrap the peice in electrical tape or duct tape or whathaveyou to fit so it won't slide around inside the tube when you close it back up and reassemble the whole deal. There, now you whack your knob till you stop! No worries!!
And right now you can buy precut Bic pens from me for $5.95. A real steal!!! call 1-800-IRNEWB. J/K, sucka!! i won't give you jack.

there, i even made a fancy little drawing for those of you with poor visualization skills.