There is a persistent myth that if a part is made of "soft metal" like aluminum or zinc, or if it has a hole drilled in a specific place, it is "disabled." This is false. The ATF evaluates whether a part can be restored to function. A zinc DIAS might only work for 50 rounds before shearing, but it works . That is sufficient for a conviction.
In the world of firearms customization, few components carry as much intrigue—and legal gravity—as the . Often discussed in hushed tones or sensationalized in online forums, the DIAS represents a significant piece of American firearms history, specifically regarding the regulation of automatic weapons. Drop In Auto Sear Keychain
While some hobbyists have demonstrated that a DIAS can be crudely made from a coat hanger, such items are explicitly considered machine guns by the ATF. Summary of Key Points Registered DIAS 3D-Printed/Keychain "Sear" Legality Legal (if registered & pre-1986) Illegal (NFA violations) Functionality Usually low, but illegal regardless Material Machined Steel Plastic/3D printed/Crude metal Purpose Legal NFA Investment Illegal conversion device Conclusion There is a persistent myth that if a
The DIAS itself is considered a machine gun by the Bureau of Alcohol, Tobacco, Firearms and Explosives (ATF) under the National Firearms Act (NFA) of 1934 and the Gun Control Act of 1968. Why? Because the legal definition of a "machine gun" includes not only the complete weapon but also any part designed and intended solely and exclusively for use in converting a weapon into a machine gun . That is sufficient for a conviction
Many of the keychains sold alongside the DIAS are modeled after the "Glock switch," the pistol counterpart to the rifle's auto sear. This small device, often no larger than a postage stamp, snaps onto the back of a Glock pistol and forces it to fire continuously as long as the trigger is depressed.