first start with a pen. duh. (easiest to build is a G2 pen)
Step 1: Dismantle.
take apart every thing you can EVEN THE SPRING in order to take the insides out you need to take the ink holder and pres hard down on the back.
Step 2: Reassembly (sorry If Incorrect Spelling Occurs)
now you should have this 1 insert the button thingy down first. 2 insert the spring. 3 insert spiny/spiky/ odd thing
Step 3: FIRE!!!
insert the ink holder press hard until the spring is compressed and everything STAYS squished. LOOK ABOVE. then press on the button in the back and FIRE!!! (I did not shoot my dog)
Step 4: Oops ACCIDENTAL SLIDE
MY DOG YEA!!!!