How to Fill Out the Proposed ATF Form 4999

If you would like to make a comment to the ATF please visit:
https://www.federalregister.gov/documents/2021/06/10/2021-12176/factoring-criteria-for-firearms-with-attached-stabilizing-braces#open-comment

With a 71-page proposed rule to clarify when attached stabilizing brace accessories convert pistols into illegal short-barreled rifles now open for public comment, we disastrously attempted to apply it.

In a test with a pair of unloaded large-format AR-style pistols, Guns.com's Chris Eger and Ben Philippi tried to honestly wade through the minefield of potential disqualifiers on proposed ATF Form 4999 to determine if a pistol/brace combos selected-- which are legal now-- would continue to be so should the rule goes into effect as-is.

And it didn't work out very well. This video for the test, which is not legal advice or a "how-to," and will probably make you want to drink at some point.