Sacramento police officers said they made the discovery on Wednesday.
The weapons included an assault rifle, assault pistol, 12-gauge shotgun, 16-gauge shotgun, Tommy gun, handguns, hand grenades, ammunition and a rocket launcher.
Sacramento’s Explosive Ordinance Disposal Unit responded to the home to ensure the scene was safe.
The investigation is ongoing, so investigators are not releasing the names of the suspects at this time.
Say, I've got an idea! Let's keep the border wide open, sue states that try to enforce immigration laws, and promote general lawlessness! Oh, wait. You say the president's already doing all that? Forget I mentioned it.
Hat tip: BadBlue.com's Real-Time News Feed.