I have been a silent witness
to all of America's finest hours.
But my finest hour comes
when I am torn into strips and used as bandages
for my wounded comrades on the battlefield,
When I fly at half-mast to honor my soldiers,
Or when I lie in the trembling arms
of a grieving mother
at the graveside of her fallen son.
OK the original link I posted was very vague. It appears that the guy only printed the lower receiver. It is made out of plastic. However the internals are off the shelf...... If you think about it that's the only part that is regulated by BATF.