California Assault With A Deadly Weapon law under Penal Code Section 245(a)(1) explained in detail. Assault with a deadly weapon is filed when someone assaults another individual using a lethal weapon or any other weapon besides a firearm.Facing assault with deadly weapon charges in Los Angeles? Call the criminal defense lawyers of Eisner Gorin LLP at 310-328-3776 for a case review. What Exactly Is a Negligent Discharge? Accused of assault with a deadly weapon in violation of California Penal Code 245? Call the Los Angeles criminal defense lawyers at Goldstein Law Group. Section 245(a)(1) states that an individual who commits aggravated assault with a weapon other than a firearm can receive the following penalties. Los Angeles criminal defense lawyer explains California Penal Code 245(a)(1) assault with a deadly weapon law, penalties, and how to best fight the charges. Assault with a deadly weapon, also known as aggravated assault, is charged under California Penal Code 245(a)(1).