BOSTON — A convicted felon allegedly spent six weeks ordering gun parts on eBay and stockpiling ghost guns and machinegun conversion devices in his East Boston apartment, and then — in what may be the most self-defeating move in the indictment — emailed one of the sellers to complain that his new trigger wasn't firing his gun properly. He attached a photo.

A federal grand jury has indicted Angel Negron, 47, of East Boston, on one count of being a felon in possession of a firearm and one count of possession of a machinegun.

According to the charging documents, between January 14 and March 2, 2026, Negron allegedly ordered 29 firearm parts to his apartment using his eBay account. On March 3, he allegedly emailed a firearm company to complain that a trigger he had purchased from its eBay store wasn't firing his weapon properly — and included the photo of the 3D-printed frame.

When agents searched the apartment on March 31, they allegedly found three privately made firearms — so-called "ghost guns" with no serial numbers — four machinegun conversion devices (the small switches that convert semi-automatic pistols into fully automatic ones), a 3D printer, five magazines, and 31 privately made firearm receivers.

This is not Negron's first run-in with Massachusetts gun laws. In 2007, he was convicted in Suffolk Superior Court of possession of a firearm without a license and carrying a loaded firearm, for which he was sentenced to 30 months in the house of correction.

Federal possession of a machinegun carries up to 10 years in prison, three years of supervised release, and a $250,000 fine. The felon-in-possession charge carries up to 15 years.

Negron was first arrested and charged by criminal complaint in March. He remains detained pending a hearing scheduled for May 6.