Drop In Auto Sear Keychain

A "Drop-In Auto Sear Keychain" typically refers to a small novelty or replica item styled after an auto sear component — the part in some firearms that enables fully automatic fire. These keychains are marketed for collectors, firearm enthusiasts, or as tactical-themed accessories. Below are concise, factual points to inform readers.

: When used with a full-auto capable trigger and bolt carrier group, it allows the weapon to fire continuously as long as the trigger is held. Drop In Auto Sear Keychain

In the United States, the legal definition of a "machine gun" is not limited to a fully assembled firearm. A "Drop-In Auto Sear Keychain" typically refers to

There are a few narrow exceptions:

The "Keychain" version is essentially the same device, often manufactured with a hole drilled for a keyring or sometimes sold as a "80% kit" that the buyer is expected to finish themselves. : When used with a full-auto capable trigger