No it is not legal. It is possible to improvise one, but a water bottle or soda can ain't gonna take that abuse. And your don't want to go to jail over a water bottle or soda can.
A little paperwork, 200 dollar tax stamp, plus purchase price, is a very small price to pay compared to the consequences.
A little paperwork, 200 dollar tax stamp, plus purchase price, is a very small price to pay compared to the consequences.