Between the lines: Gun sellers and manufacturers are typically immune under federal law from lawsuits brought against them for crimes committed by people who purchased their firearms, says attorney Shanin Specter of Kline & Specter, a law firm that filed two of the lawsuits.

• But arguing the gun seller negligently entrusted Carriker with the firearms parts could allow the families to pierce the immunity and prevail in court, Specter tells Axios.