legal

At this writing the use and sale of solvent traps is legal. They only become illegal when holes are drilled allowing a bullet to pass through the unit which then makes it a suppressor. At that point, it is illegal.

It is still legal to buy and build a solvent trap for individuals as long as the proper forms are completed and submitted to the government before the unit is built. Download a copy of the needed form 1 here . Here is instruction on how to fill out the ATF form 1 . If approved you will be required to pay around $200 for a tax stamp for the right to own the suppressor.