Military models are great 3D printing projects, even more so if they are somewhat functional. [Flasutie] took it a step further by engineering a 3D-printed howitzer that doesn’t just sit pretty ...

But 3D-printed guns vary a lot. Some models - like the 3D-printed gun company Defense Distributed's "Liberator" - can be made almost entirely on a 3D printer. Others require many additional parts ...