The Justice Department filed a federal suit on Wednesday challenging Colorado's statewide prohibition on high‑capacity magazines. The law, enacted after the 2012 Aurora theater shooting, bars magazines holding more than 15 rounds and applies to a wide range of popular firearms. Officials say the measure aims to curb mass‑shooting lethality.

This action follows a separate lawsuit filed the day before against Denver's 1989 assault‑weapon ban, marking the second federal challenge in two days. The Trump administration argues both statutes infringe the Second Amendment, contending that the magazine limit effectively eliminates standard equipment for many gun owners. Legal experts anticipate a protracted constitutional battle.

Colorado Attorney General Phil Weiser denounced the filing as a “dangerous overreach,” insisting the restrictions protect public safety and reflect voter intent. State and local leaders have pledged to defend the statutes, signaling a broader clash between federal authority and state‑level gun‑policy reforms championed by Democratic lawmakers.

The litigation adds pressure on manufacturers and retailers that depend on high‑capacity magazines, potentially disrupting supply chains and prompting a reassessment of product lines. With both state and federal courts now involved, the outcome could reshape the market for ammunition accessories across the United States.