Page 4 - Zip Gun News Today : Breaking News, Live Updates & Top Stories | Vimarsana

>> a tool mark is a characteristic left behind during the process of using a tool to either cut, grind, file or polish a piece of metal. >> there can be hundreds of microscopic tool marks in a pipe used in a homemade gun. when ballistics experts compared the bullets from the victims to those fired from seda's zip gun, the tool marks were microscopically similar. finally police asked seda for a blood sample for dan testing. dna matched that of the letter from the zodiac killer. detectives had the pleasure of telling seda they knew his true identity. >> i put out my hands and said i've been look...

Confiscated by staff. ♪ homemade weapons the inmates have made from bed springs or melted down plastic. they're truly ingenious, but they're deadly as well. >> at california's san quentin state prison, we saw how sophisticated some inmate weaponry can be. this homemade pistol is known as a zip gun. >> this portion is filled with ground up matchheads. the two holes here, inmates insert a wick. the inmate takes a plunger, pokes shrapnel in the open end, pieces of metal, ground up zippers. when the target walks by the cell, officer or inmate, the inmate lights this, when it goes down, strikes t...

For my prison activities and conduct. tried to get back into the main line, but it was kind of hard. after facing walls for 15 years and handcuffs everywhere i went, i didn't adjust too well. i still became more assaultive, more combative, more violent. >> after 25 years of incarceration, randall had plenty of violent episodes to share. >> i had threw a bomb in an inmate's cell and blew his toilet off the wall and blew a patch of his leg off. an officer came to my door. i made a zip gun out of some magazines and i shot him in the face. >> as the story unfolds about why he's there, what he's do...

>> "lockup" crews are regularly exposed to the tools of a deadly trade. >> every prison we film in, there's always a shank museum, a place where the authorities display all of the weapons that are confiscated by staff. homemade weapons the inmates have made from bed springs or melted down plastic. they're truly ingenious but deadly as well. >> at california's san quentin state prison, we saw how sophisticated some inmate weaponry can be. this homemade pistol is known as a zip gun. >> this portion is filled with groundup matchups. >> the two holes here, the inmate inserts a wick, inmate takeses...

Magazines rolled. this is a spear. and as you can see, it's pretty rigid. this inmate lodged a metal screw for the tip. when the officer or inmate walks by the cell, the spear is thrust out. >> you wouldn't think that a rolled up newspaper or magazine would be -- make that good of a handle and it does. very effective. >> this is known as a zip gun. this portion of the zip gun is filled with match heads, ground-up match heads. a plunger is used to push shrapnel, pieces of metal, ground up zippers, packs it down. when his target walks by, the inmate would light those two fuses. basically what yo...