this is "nightline" -- tonight. >> this is it. >> what you are seeing is one of the most powerful rifles available. and it was made at home. no background check required. it is entirely untraceable you. are going to meet the guy selling the gun kits completely legally. 75,000 this year alone. >> our goal was to get as many of these on to the streets as humanly possible. ♪ let it go >> plus what do "frozen's" anna and "toy story's" woody have in common? this guy, the man behind so much movie magic reveals the secret to creativity inc. ♪ ♪

and miracle in hell. two missionaries who left a comfortable life and ended up at war with a billion dollar sex industry. the extraordinary journey you do not want to miss. but first, the "nightline" top five which starts right now. ♪ >> after such a winter reawaken yourself to sun-filled days. the infiniti spring event with offers on our lineup like the q-50 for $369 a month.

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♪ good evening. forget all those debates about background checks and gun show loopholes, because now it is very easy and completely legal to make a firearm right in the comfort of your own home. we are talking high-powered rifles that are totally untraceable. tonight the results of a joint investigation by our partners at fusion and univision. here is fusion's chief investigative reporter maryann vanzeller. >> this is it. >> one in the chamber. aim at the center dot. and take a shot. have fun. ♪ [ gunfire ] >> there you go. >> reporter: this morning this gun didn't exist. just a pile of metal parts. but now -- definitely works. this ar-15 was built from a kit you can buy online. it can shoot 4 around a minute.

it has no record of sale and no serial number. the government has no clue it exists. and that's just how he wants it. >> what our goal was is to get as many of these on to the streets as humanly possible and, and, my opinion, an armed society is a just society. >> reporter: in oceanside, california, dimitri made a big business out of selling kits easily turned into guns. because of the way the gun law works no background check is required. >> everything that is shipped from our company, ordered through the website comes through the building and goes out. you have texas, connecticut, michigan. >> reporter: you can legally build a gun as long as you don't sell it or give it away. easier than assembling an ikea dresser. so would i be able to do this if i wanted to? >> you would be. >> reporter: legally i could do this if i wanted to? >> absolutely. as long as you are able to own a firearm, not restricted from firearm ownership. if you are restricted from owning a firearm making one would be illegal.

>> reporter: but our reporting shows that weapons like the one we shot are going to criminals. they're arming gang members in l.a. >> gang members that have terrorized this community. >> reporter: cartels in mexico. [ speaking foreign language ] >> reporter: even a mass murderer. >> requesting assistance on shooter, multiple victims down. >> reporter: last june in santa monica, john zawari killed six people with this weapon. he fried tried to buy a gun, bo the pieces on line and built his own assault rifle. the saime day sandy hook happend in china there was a massive, knife massacre occur. should we go out and say knives are the problem in china, force people to go through background checks to have knives.

>> reporter: while he sells everything you need to make a gun at his shop heap is not a firearms dealer and he says he doesn't need to be. >> it ooelts either is a fireart a firearm. a black and white situation. these are not firearms. >> not one single firearm here? >> no. not for sale. >> it all goes back to the gun control act of 1968 which defines what a firearm is. a rifle, as far as the government is concerned is this. called ail receiver which connects the mechanical part and makes the gun go boom. receivers are regulated and stamped with serial numbers and registered with the fed the you need to pass a background check to buy one unless you buy one that is not quite finished. one that need a couple more holes drilled in it. that's called an unfinished or 80% receiver. and the law says, it's not a gun. this is basically what is called an 80% lower receiver. and this is considered a gun. this is a gun.

this is not. it takes about 45 minutes at a drill press to do the job. if you don't have one of those, there is now an even easier way. plastic receivers that can be finished with a $50 tool. >> really, really cool. these ones the experience level is lower. you can build that at home. >> you see this, the job is all done for you right here. you can see this is another color, black, so you know where you need how to cut it. and you have the little parts here. that also demonstrate where you need to cut it. di he will sell 75,000 unfinished receivers this year mostly on line. no background check necessary. meaning anybody can buy one. who is there to know if i am allowed to buy this gun or not. essentially making a gun. nobody knows if i am allowed. >> you as a responsible american citizen should know whether you are allowed to own a firearm or not. not one of those, ifs, ands, butt buts. this way is more complicated

than to buy them on the street out of the trunk or go through whatever illegal activity they go through to get the weapon. >> reporter: the atf says the guns are increasingly popping up at crime scenes. >> what is this? >> this is an ar-15. home made from -- from an unfinished lower receiver. and this weapon was purchased by atf undercover agent from gang members here in, in los angeles. this is a completely untraceable firearm. >> how challenging does it make your job? >> extremely challenging. they teach atf agents. they've tell us. every gun tells a story. this gun does not talk. this gun is mute. >> reporter: so turning its attention to the trade in unfinished receivers. >> if somebody is making this into this -- my job is to try to stop that. >> reporter: last year the atf raided the gun part stores across california. twul men were charge e

twul -- two men were charged. the atf confiscated 345 guns. >> are you afraid the government will stop you guys from selling these receivers? and from building your own guns? >> no, i am not afraid of the government at all. in fact the government should be afraid of the people not the other way around. >> reporter: in march, just two weeks after we interviewed him, the atf raided dimitri's stores. he says they seized 6,000 unfinished plastic receivers just like the one he's showed us. dimitri told us the government kids the plastic ones too close to being a finished receiver but he is still in business and he believes he has already succeeded. >> i am willing to bet there is hundred of thousand if not millions of the receivers that are ak shaefl ctually in the co. one of the things they can pass the laws they want. these things are out there. >> reporter: you think in that way you have sort of done --

done your job. >> i am somewhat proud of the accomplishment, yes, yes, yes. that is something i will put it on my gravestone. it its part to arm the people. and the defendant's charged with illegally making and selling ar-15s, submitted a not guilty plea. coming up next on "nightline," pulling back the curtain on some of the most popular animation movies ever, "frozen" and "toy story 3" with the guy behind it all. for a limited time only! you can build it any way that you like, pick your three favorite things. it is spectacular! i'm nathan tavernaris and i sea food differently. ♪ abe! get in!

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ever find yourself watching movies like "toy story 3" or "frozen" and having thoughts how do they make these things? who comes up with this stuff? tonight meet the guy behind pixar who will show you how they engineer creativity around their office. it involves, graffiti, tiki hut cubicles and something called a love lounge. here's abc's david wright. ♪ here i stand >> reporter: the number one animated movie of all time. disney's "frozen." ♪ never bothered me anyway >> reporter: number two, pixar's "toy story 3" one common denominator, the same executive in charge of both companies. so nice to meet you. >> nice to meet you. >> reporter: you are the woody of pixar? ed cap? well may not be a household name. but you have seen his movies. he helped create the entire

field of computer animation. you are a computer guy? >> yes. as a child my hero for walt disney and albert einstein. i basically wanted to be an animator. but when i left high school i didn't know how to proceed. there were no schools for it. >> reporter: he found a job with george lucas looking for a special effects for his "star wars" movies. >> he believed technology would change the industry. no studios believed this at the time. >> reporter: the first time computer graphics were used in a movie in a largely forgettable film. the 1976 movie "future world." that its ed capwe'll hand, animated through a piece of ked he wrote as a student. a building block to much more memorable effects later on. the first time we actually had something of significance was in the second "star wars" movie. the fly-by over the planet. and that really caught people's

attention. >> reporter: in his book, creativity inc., he describes lucas' management style as being yoda-like. >> do or do not. there is no -- >> reporter: if lucas was yoda there was an equally powerful force who would soon take his place. >> when steve came and acquired pixar from lucas film it was just after he had left apple. >> what was his goal in running pixar? seems a change from apple. >> steve believed in passion. he saw this amazing passion in us. he responded to that. >> reporter: steve jobs helped them achieve their dream of making the first feature length computer animated movie ever made. >> the birthday party is today. >> reporter: it took a wheel to get there. their first big success this animated short that won an academy award. a giant statue at the company headquarters. >> the most common question

people asked was, was the big lamp the mother or father? itch you can make somebody thing an inanimate object can think then you are doing animation. >> that's "toy story." >> reporter: "toy story" started as a short, no woody, no buzz, a tin toy trying to escape a baby. later a feature length story about the latest, greatest doll, old-fashioned doll and conflict between them. woody was the villain. he was unlikable. all the films they begin they don't work. we have to go through the process figuring out how to make them work. >> reporter: everything at pixar head quarter, steve jobs building is desaigned to promot creativity. >> this is our animation area. >> looks fun. >> remarkable things. tiki huts. including the cubicles. >> one here is designed to to be

look from indiana jones. >> this is a place where everything is possible. shows us a little door behind one person's work station. let's go in there. >> a cozy nook they call the love lounge. >> over the year, just a lot of people have come through here, signed it. it's been remarkable. >> you encourage graffiti you are telling sunny. >> we do. we encourage the unexpected. >> disney bought pixar put him in charge of both companies. noticed that the offices at disney were different. the cubicles barren. >> oh, no, this is a disaster. you don't want cleaned out cubicles. you want them to be personalized. the same was pretty much true of the movies, disney was releasing. animation, the core of the company hit a bit of a slump. seems like when you merged with them. they were like, mr. incredible at the beginning of the movie.

enormously popular character, best days were behind him. >> that's right. >> reporter: their first big hit. hugely popular reworking of rapunzel. >> tangled was the biggest. they earned the confidence of the marketing people. and a big success. and now "frozen" the biggest animated film of all time. ♪ ♪ >> a golden age of animation. walt disney 2.0. the results speak for themselves. >> finding nemo, the incredibles, wall-e. >> i'm david right for "nightline" in emoryville, california. ♪ ♪ >> we should say that pixar and the disney animation are owned by our parent company disney and creative inc. available in the bookstores now.

>> coming up on "nightline." missionaries who went straight into hell on earth taking on a billion-dollar sex trade. ♪ ♪ why don't weeeeeeeeeeee go out to the car. ok, i'll just be outside... ok, yeah. his dad is my boss. yeah. vin scanning to add a car. just a tap away on the geico app. my golden years will not just be gold plated. i had 3 different 401(k)s. e*trade offers rollover options and a retirement planning calculator. now i know "when" i'm going to retire. not "if." before chantix, i tried to quit probably about five times.

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it is human nature to look away some times when confronted with a terrible problem. to night you meet a married couple. christian missionaries who not only refused to look away they up-ended their lives even risked their lives to help vulnerable young women. here is abc's byron pitts. >> if hell had region, home to 10,000 prostitutes many teenaged girls. most sold into the sex trade by their families, like cattle to a slaughterhouse. >> they are seen by society as untouchable. >> reporter: untouchable until kerry and annie hilton stumbled upon them literally. the preacher and wife left new zealand to come to india to do missionary work but had no idea their new apartment overlooked

the largest sex bazaar in india that is until the sun went down. >> i personally hadn't left new zealand with an 11-year-old daughter to think i would be living in a red light area. >> reporter: why didn't you then pack the next day, and forgive me, run like hell? >> we felt that these women straight away were our neighbors. >> reporter: that was 15 years ago. undeterred they stayed. raised their children. and unbelievably decide to take on india's billion dollar sexen dus trsexen -- sex industry. rescuing these girls one at a time. >> we wanted them to have a choice. they never had before to. provide an economic solution a first step. >> reporter: they created a company, burlap bags and cotton t-shirts built on a bold model. >> we don't hire based on experience and skill. we hire on the basis of, a need to be free.

>> reporter: what started with 20 women today employs more than 200. >> some of the girls they become stars. >> reporter: stars like this girl. her mother was a prostitute. groomed for the same fate she witnessed things no child ever should. >> it was safer for her how to come and work with us. but actually for me she was the example of the future generation. where the cycle can be broken. >> she lives a life her mother can never imaginmagine? >> we are so proud of her. >> reporter: in india's dangerous sex trade, saving a woman's life also means you are cutting into some one else's profits. >> some body rang up threat tuned kill us. >> reporter: threat tuned kill you and your wife? >> actually if we didn't pay, a lot of money. and quite a conversation. >> reporter: did you pay? >> absolutely not. >> reporter: now the hiltons are

expanding their business opening shops in small villages that have fed india's brothels for generation. a new crop of poor and desperate girls year after year. >> reporter: yours is not a drive-by solution. >> our solution is what we will do for the rest of our lives. >> reporter: blind faith may have brought them to india. but crystal clear sight of freedom in the eyes of so many has kept them here. for "nightline," byron pitts in new york. >> thanks to byron pitts for an incredible story. thanks to you. and tune in to "gma." as a there is no substitute for experience. for what reality teaches you firsthand. in the face of danger, and under the most demanding circumstances. experience builds character. experience builds confidence. and experience... has built this. the 2014 glk. the engineering, and the experience, of mercedes-benz.

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