The 3D printing wars are hotting up, as Thingiverse users upload a design for an AR-15 magazine (holds five rounds, easy to expand to as many rounds as the material will hold without snapping) and an AR-15 lower receiver, a component whose ownership is proscribed or regulated in most of the USA.
This is a near fully printable 5.56mm X 45mm or .233 REM AR-15 magazine. It is current only a 5 round magazine. I left my printed spring design out on purpose for saftey reasons. However, with a little printing experimention and some range time it can be made easily.
The Lower Receiver is the frame that holds together all the other pieces of the firearm. In the States, all the other pieces can be purchased without a permit - over the counter or through the post. The Lower Receiver is the only part which requires a background check or any other kind of paperwork before purchase.
Typically this part is made of aluminium. A rifle with a Lower Receiver made of plastic can be perfectly functional.
AR-15 Rifle Magazine by crank
Last week’s John Oliver segment on Robert E. Murray, CEO of the coal mining Murray Energy Corporation, noted that Murray had a history of litigation against his critics in the news media, including the New York Times, and predicted that Murray would go on to sue Oliver (Murray’s lawyers had sent Oliver a letter warning […]
In this security footage from a bank in Chapalita, Mexico, three masked men approach the doors with the clear intent to rob the place. A fleet-footed member of staff locks the glass doors. The masked men stand on the other side a little while, looking in at him. Then they walk off.
SXSW has made good on its promises to walk the talk on supporting immigration rights, coming out in support of the city of Austin’s lawsuit against the state of Texas over SB-4, the Texas law that bans “sanctuary cities” where law enforcement officers do not check or take action on arrestees’ immigration status unless it […]
Although flagship smartphones are unlikely to adopt heavy-duty outer casing anytime soon, you can always prepare your device for the outdoors with a beefy case and and an external battery like this Nomad Tile Trackable PowerPack, available in the Boing Boing Store for $119.95.The Nomad Tile can fully recharge an iPhone 7 over three times […]
Even though credit cards now feature an EMV chip for securing transactions, they still have to include the magnetic strip for compatibility with older point of sale systems. Because of this, there’s no way for the chip’s new security capabilities to protect against card skimmers in the wild.How do you protect yourself from legacy-technology-induced fraud? […]
As the old saying goes, “You should sit in meditation for 30 minutes every day. Unless you are too busy, in which case you should meditate for an hour.” Since most of us have an endless list of things to do and people to see, carving out quiet time can feel impossible, especially when most […]