In 2022, the ATF changed the procedures for filling out a Form 1 to make your own silencer. The ATF denied about 850 applications. The ATF claimed "Solvent Traps" were actually suppressors, and started denying Form 1 applications, and requiring much more information about how a silencer was to be manufactured, and what parts would be used to make the silencer. Senators and representatives sent two letters, one from representatives, and one from senators to the Biden ATF asking for clarifications of what the ATF was doing. Here is an excerpt from the Senate letter submitted to ATF on March 16, 2022
We request answers to the following questions:
4. Please explain how the ATF evaluates whether a Form 1 application for a silencer is going to be used for a kit that, in ATF's view, is already legally a silencer. ......"
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