While the firing of 3D printed guns is not one of the safest activities around, hobbyist are figuring out ways to make the guns more durable. Last month a Canadian man showed off Grizzly, a 3D printed rifle that entirely manufactured from ABS+ plastic apart from its firing pin. While the original design was destroyed after firing just one shot, the same guy now shows off his test run of Grizzly 2.0 on YouTube, and this revision is capable of firing 14 .22 rounds before cracking.
A Youtube video depicts the gun in action, where its uploader named ThreeD Ukulele uses his hands to shoot into a mass of greenery, as opposed to using a clamp as with the first model. The video also shows how the rifle is reloaded after every shot.
The somewhat worrying prototype was printed using a Stratasys Dimension 1200ES industrial 3D printer, and the more robust upgrade has lead to concerns that people everywhere in the world will be able to design and build their own firearms using commercial 3D printers.