Shunned by corporations, US gun entrepreneurs launch start-ups

While the Second Amendment of the US Constitution guarantees that the right to keep and bear arms shall not be infringed by government, private firms are free to turn away from guns, and many have

Larry Lopata and some friends were sitting around the campfire on a hunting trip when they came up with an idea for a new firearms product: an adjustable-length trigger, so people with different sized hands can comfortably share the same gun.

The four business partners put $150,000 into development until last December when they were ready to seek more funds from investors. Crowdfunding sites such as Kickstarter and Indiegogo would have been perfect, but they prohibit users from raising money for weapons projects. So Lopata created his own, gun-friendly crowdfunding site, GunDynamics.com, which launched last month.

While much of corporate America has