Straight out of the Kingsman arsenal, we recreated the legendary umbrella gun—a weapon that’s as stylish as it is deadly. Complete with hidden firepower and sleek design, this build combines ...

If you answered ‘get hassled by TSA agents’, you’d be right, but you could also do what [Mski] did and make a pocket dart gun! [Mski] used a 10mL syringe and a clear BiC pen body.