# U.S. firearm offense sentencing

> Live situation record from CLSTR: https://clstr.news/situations/us-firearm-offense-sentencing
> Updated: 2026-09-09T13:51:24.000Z. Sources: 5. Developments: 2.

In Missouri, Steven M. Harris was sentenced to 25 years in prison for his role in a March 2025 shooting in downtown Columbia. Harris pleaded guilty to charges including unlawful use of a weapon, armed criminal action, and stealing a gun after pursuing a vehicle that struck him and firing a stolen weapon. His sentence consists of concurrent 15-year and 10-year terms running consecutively to a previous 10-year sentence.

Separately, in Montana, Shawn Ryan Cowan received a 24-month prison sentence and three years of supervised release for unlawful possession of a firearm. A jury convicted Cowan after investigators found a cache of pistols, rifles, and a shotgun at his home. Cowan, a registered violent offender, had contested the validity of his prior convictions during the proceedings.

## Timeline

### 2026-09-09: Two men sentenced to prison in separate U.S. firearm cases

Two men received prison sentences in separate U.S. cases: Shawn Ryan Cowan received 24 months for unlawful firearm possession in Montana, while Steven M. Harris was sentenced to 25 years for a shooting in Mo.

3 sources. https://clstr.news/cluster/two-men-sentenced-to-prison-in-separate-us-firearm-cases

### 2026-09-01: Atlantic County men sentenced for firearms and drug offenses

Two Atlantic County men received prison sentences: Daniel Becerra was sentenced to seven years for a shooting and police pursuit, while Nathaniel Fisher received 14 years for firearms and fentanyl charges.

2 sources. https://clstr.news/cluster/atlantic-county-men-sentenced-for-firearms-and-drug-offenses

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Cite as: U.S. firearm offense sentencing. CLSTR, https://clstr.news/situations/us-firearm-offense-sentencing