The rifle allegedly used to assassinate conservative activist Charlie Kirk has turned out to be untraceable, adding a new layer of mystery and controversy to a killing already marked by inconsistencies and unanswered questions.

According to prosecutors, the weapon—identified as a Mauser Model 98—was a decades-old, German-made bolt-action rifle that predates U.S. serial number requirements, making it impossible to trace through standard forensic databases. The rifle was reportedly used by Tyler Robinson, who is accused of fatally shooting Kirk during a public event at Utah Valley University on September 10.

The firearm, described by Robinson in text messages as “grandpa’s rifle,” is believed to have been manufactured before 1963, when serial number mandates were introduced in the wake of President John F. Kennedy’s assassination. The Gun Control Act of 1968 made such markings mandatory for all new firearms sold in the U.S., but older guns like the Mauser are exempt—creating legal blind spots in modern gun tracing efforts.

Robinson allegedly left the weapon wrapped in a towel and hidden in a wooded area near the event site after the shooting. Authorities discovered the gun several hours later.

In a series of unusually detailed messages sent to his alleged transgender “lover” following the attack, Robinson appeared both anxious about abandoning the weapon and oddly confident that it couldn’t be traced — describing several key facts of the case with striking specificity:

“IDK if it has a serial number but it wouldn’t trace to me,” Robinson wrote. “I’m worried about prints. I had to leave it in a bush where I changed outfits.”

Another message read:

“I’m worried what my old man would do if I don’t bring back grandpa’s rifle.”

The emergence of an untraceable firearm deepens public skepticism surrounding the circumstances of Kirk’s murder. Critics have already pointed to a growing list of irregularities: gaps in security, slow police response, and now, a weapon that leaves virtually no paper trail.

It remains unclear how Robinson’s grandfather acquired the gun or whether it was ever officially transferred or registered. Prosecutors have not commented on whether ballistics tests or forensic evidence—such as fingerprints—will be critical to establishing a link between Robinson and the shooting.

Robinson is currently in custody and facing multiple federal and state charges related to the assassination. A preliminary hearing is expected in the coming weeks, but defense attorneys are already suggesting that the government may have a difficult time establishing premeditation or motive, especially given the absence of a direct forensic trail from the firearm.

The revelation about the weapon adds to what many are calling an increasingly bizarre and troubling case—one in which the facts don’t seem to fit the narrative. With prominent political figures attending Kirk’s recent memorial under tight federal security, public scrutiny of the investigation is only expected to intensify.

“This case has gone from tragic to deeply unsettling,” one former FBI profiler told reporters. “An untraceable weapon, a public assassination, and now mounting signs of something much bigger under the surface.”

Photo credit: KSL News Utah