Take your grips and cut them as you want. I used the Dr. KT grip pattern
For reference, the coloured grips are: 7, 2, 4
The gray grips are just 2 rings
And just cap your mod when the glue is dry! =D
Now for the MP version. You need a paper clip to work the mechanism through the signo tip.
Straighten out one end of the paper clip and put it through a signo tip. Then bend a small amount of the clip so that it can push the tube to feed lead into the tip.
Glue your other bic tip and put the signo tip with the paper clip on it
While it dries, get an empty ink tube or empty it yourself
Put the tip without the paper clip into the bic body and put the MP mech in from the back. Do length checks (sorry i forgot to take measurements so you'll have to do some trial&error) and when you think it's right, stick the tip with the paper clip on into the other end of the bic body. Cut the paper clip, bend the end a bit then put a bit of tape over it so that you don't stab yourself when clicking...... yeah...
Then put the caps on! =D
Hope you enjoy the mod! XP Good for people with small hands like me =P