Kirby Keith Kehoe and his adult son, Cheyne Christopher Kehoe, admitted they possessed guns that were seized during the Oct. 14 raid at the elder Kehoe's 40-acre property near Ash Fork.
Both have previous felony convictions and are banned from possessing firearms.
Authorities said they found more than guns, ammunition and ballistic vests during the raid.
They each face up to 10 years in prison for their pleas to being a felon in possession of firearms.
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