Bullet button

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AR-15 receiver with bullet button

A bullet button is a device used to remove a magazine in a semi-automatic rifle, replacing the magazine release with a block which forces the user to remove the magazine by using a tool rather than the magazine release button. This allows the rifle to comply with parts of California's firearms laws. The name came about in relation to a 1999 California law which said that a "bullet or ammunition cartridge is considered a tool."[1]

The 2012 court case Haynie v Pleasanton validated that a bullet button is legal and rifles that have one installed are not considered assault weapons.[2]

In 2016, California law was changed to prohibit the sale of firearms with bullet buttons.


After certain rifles with detachable magazines and certain other features were classified as assault weapons under California State law, gun owners and manufacturers sought various ways to obtain certain styles of rifles similar to those determined to be assault weapons. One of the most common modifications is the use of a part known as a bullet button, which modifies a rifle so that the magazine is not removable without the use of a tool (a bullet was defined as a tool per state law).[1] The bullet button was invented and named by Darin Prince of California in January 2007. Prince also holds the US Trademark for Bullet Button USPTO trademark registration number 77663672.[3]

The bullet button recesses a small release within a block that replaces the magazine release. The recessed button to detach the magazine cannot be pressed by the shooter's finger. Firearms with this feature no longer have a "detachable magazine" under California's assault weapons definition, and therefore may be exempt depending on the other requirements.

Many tools have been devised to make it easier and faster to release a magazine from a rifle, as California law states that the user must use an external tool not attached to the rifle.

California Senator Leland Yee, who was later convicted of arms trafficking, attempted to have the bullet button outlawed in California, as did U.S. Senator Dianne Feinstein at the federal level;[4] both attempts failed.[5][6] On April 20, 2016, California state lawmakers gave initial approval of a bill that prohibited the sale of rifles with the bullet button. This was in response to a December 2015 terrorist attack in San Bernardino, California.[7] In July, the legislation was signed by the governor, and sales of bullet button-equipped rifles in late 2016 were reported by the Los Angeles Times to have doubled in anticipation of a January 1, 2017, ban on sales of new such rifles.[8]

After the spike in bullet button sales, the creator of the bullet button, Darin Prince, released a new compliant tool called the Patriot Mag Release. It is a more complicated version of the bullet button and it is compliant with the bullet button ban. The bullet button only consisted of about four parts and was easily installed. The patriot mag release has seven to twelve parts, depending on what kind of rifle you want to convert, and usually, a store that sells the PMR will install it for you. The patriot mag release takes much longer than the bullet button did to release the mag and that's why it was approved as a new compliance tool. With the bullet button, all you had to do was use the tip of a bullet to click down the inverted button to release the mag. With the PMR, you pull the installed paracord string, it opens the lower and upper, you open that and can now push down on the mag release button and release the mag. Then, you push the rifle closed again, push the button that the paracord is attached to, and the rifle is good to go.[9]


  1. ^ a b "Department of Justice Regulations for Assault Weapons and Large Capacity Magazines" (PDF).
  2. ^ "Haynie v Pleasanton docket". March 25, 2010. Retrieved January 6, 2012.
  3. ^ "Trademark Status & Document Retrieval". tsdr.uspto.gov. Retrieved 2016-07-25.
  4. ^ Feinstein, Dianne (January 24, 2013). "Assault Weapons Ban of 2013". senate.gov. Retrieved May 25, 2014.
  5. ^ Newcomb, Alyssa (March 27, 2014). "California State Sen. Leland Yee Indicted on Weapons Charges, Was Gun Control Crusader". ABC News. Retrieved May 18, 2014.
  6. ^ "Bullet Button Used To Get Around California Gun Laws". CBS News. May 1, 2012.
  7. ^ McGreevy, Patrick (April 20, 2016). "Lawmakers advance gun control measures in response to San Bernardino massacre". The Los Angeles Times. Retrieved April 20, 2016.
  8. ^ Patrick McGreevy (December 18, 2016), "Gun retailers report a run on firearms ahead of new California restrictions", The Los Angeles Times
  9. ^ Bullet Button (December 1, 2020), "AR-10 PATRIOT MAG RELEASE KIT W/ EXTENDED TAKEDOWN PIN", Bulletbutton.com

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