A  group in Texas has posted what appears to be the first video of the  firing of a plastic handgun – created with a 3-D printer.

The video   shows a single shot  being fired from  a gun that, with the exception of its metal firing pin, was assembled from parts made with a 3-D printer.

” Defense Distributed.” is a non-profit group founded by 25-year-old law student Cody Wilson – who has  posted instructions for the gun online so other people can duplicate it.

 Reports of the test-firing have reignited calls to ban 3-D-printed guns, which critics fear could easily fall into the wrong hands and create safety concerns because they’d be invisible to metal detectors.

The group wants to expand the range of ammunition a 3-D printed gun can fire and make them  printable with increasingly  inexpensive machines – such as the $2,800 Replicator 2  by Makerbot.