this is the weapon that peter used to kill zakiya lawson. handguns are the most common weapon used in domestic violence homicides. >> this is armslist, it's the largest online gun site in the country. >> i'm looking for a cheap handgun for around .150 and $250. he's laying the money on the bed. this is completely unregulated. anyone can buy from a private party here without going through a background check. private sales can be completely anonymous -- no id, no background check no records. >> critics call this the "private sale" loophole, an estimated 40 percent of gun sales that are largely invisible. >> we'd been told that south carolina's weak gun laws contributed to its high rate of domestic homicide. so our crew took a hidden camera to a gun show to see if buying a gun illegally was as easy as sources said. licensed dealers are required to run federal background checks and keep records of sales. we'll stop at a private sellers table >> what's required for the purchase, what do you need from us? >> show me you're a south carolina residen

. >> which is what happened to former attorney's zakiya black and nirvana dove. >> so they created a mobile beauty service right here in philly that comes to you. >> let's get our makeup >> it's called zyn beauty, >> when you're busy as a woman you're trying to find that balance, you know, mental balance, work balance, family life balance. and so our motto is "the balance between busy and beautiful".and they're >> and they're bringing the salon to busy women across the philadelphia area.it's like >> it's like one stop shopping for beauty. >> the idea came to creators zakiya and nirvana, when they were leading hectic lives at a law firm. >> working late nights, crazy hours, trying to figure out which salons we would go to. or where we could get our beauty need met on our crazy schedules. um, we just started brain storming. what would make our lives a lot easier. we said it would be awesome if our stylist could come to us whenever we needed them. that's kind of where the idea was born. >> the services only need to be booked 6 hours in advance, perfect for busy women with changing sched

. >> big congratulations to zakiya our latest winner in the ipad mini give away. we're giving away later in the show. to win you have to know the friday buzz word be 18 years old and be a legal immigrant. stand by everybody for the give away. >>> these three guys are being total thugs when out of nowhere, this business woman or schoolgirl comes through with kung fu ninja skill. >> i want this to be real. >> it's though the. >> 2 million have viewed it. turns out there's more. >>> chinese cat woman turns up and gives a beating. sorry. it turns out there's a slew of these. there's another from a plane with a business man doing the same dispatching thugs. this isn't chinese cat woman. this is from korea. this is part of the underground production for kings men. if you want to see the trailer here this might seem strangely familiar from what we see here. gentleman locks the door and starts laying it into the disrespectful people as he's kicking butt. >> how strange because he's a woman. >> the guy on the plane has 80,000 views. the most famous is the one we saw. many