Worse, millions AR-15 upper receivers would now be regulated as “firearms,” requiring serial numbers and exactly the same requirements as a full gun, creating a nightmare for millions of AR-15 owners, particularly if they want to swap upper receivers on their guns.

Stop this unconstitutional over-reach by a federal bureaucracy: the comment period is open until August 19th.  Please send  the message provided below ASAP to the link provided.

Go to https://www.regulations.gov/document/ATF-2021-0001-0001

• Click "comment" on the upper left section of the page.
• Copy/paste the suggested text below.
• Please do this as soon as possible. A Federal Bureaucracy cannot be allowed to create it's own laws by whim.

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Subject ATF 2021R-05

 Dear Sir or Madam,

 I strongly object to the proposed change in ATF rules 2021R-05.

 These proposed changes create language and intent that does not exist in the Gun Control Act. These changes allow the ATF to arbitrarily define what is and what is not a firearm.

This would make parts that require extensive skilled finishing into firearms. Where would this stop, is a block of polymer or metal a firearm?

 In the case of modular type weapons such as AR-15s that have already been made, an onerous burden would likely  be placed on owners to place serial owners on parts that did not previously require them. Since millions of these parts already exist, it is likely there would be no practical way to accomplish this.

 If laws have become out of date, it is up to to Congress to replace or  amend these; this power must not be usurped by a non legislative government entity.

Respectfully,