A Drop-In Auto Sear (DIAS) is a small metal component that can be inserted into the lower receiver of an AR-15. Unlike a standard military M16, which requires a permanent modification (drilling a "third hole" in the receiver) to function automatically, a DIAS is designed to "drop in" and perform the same function without altering the receiver itself.
To understand the keychain, you first have to understand the part it mimics. A Drop-In Auto Sear (DIAS) Drop In Auto Sear Keychain
No amount of clever marketing, keyring holes, or "it's just a joke" defenses will stop an NFA violation charge. The safest place for a drop in auto sear keychain is in a museum display—or never manufactured at all. A Drop-In Auto Sear (DIAS) is a small
In the end, a keychain is just a keychain—unless the ATF disagrees. And in that disagreement, the government nearly always wins. A Drop-In Auto Sear (DIAS) No amount of