While the ruling classes continue to try to figure out how to prevent people from arming themselves, the people continue to find not only new ways to arm themselves but also how to improve what’s available to ’em. For instance… not long ago a single-shot 3D printed pistol was demonstrated. It required an expensive high-end printer and could only fire a single shot before the barrel needed replacing. Now, an improved and cheaper 3D printed gun has demonstrated the ability to fire 9 shots before barrel replacement. Still pitiful by standard firearm standards, but still, improvement is improvement. Better still is the fact that this is work done by a different designer. The more designers, the better the designs… and the harder it will be for governments to control. Can’t stop the signal.
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Additionally, an somewhat less sensibly, 3D printing has been used to make bullets. Specifically, slugs for a 12 gauge shotgun. seems to me this might be fine for making prototypes and master parts for use in casting copies, but 3d printed bullets seem overly expensive.
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UPDATE: You can buy yo8ur own Lulzbot from Amazon: