A San Jose man who was arrested last year after police found a cache of guns and explosives in his home near Japantown will spend about 2 1/2 years behind bars after reaching a plea deal with Santa Clara County prosecutors.

Mark Sedlock, 63, was sentenced April 6 to five years in prison after pleading guilty to 50 felony counts, according to Santa Clara County deputy district attorney Bud Porter. Sedlock is expected to be released from prison in March 2014 after serving half the sentence, Porter said.

Sedlock was facing a maximum sentence of more than 36 years if convicted as charged.

Porter said the case was really about how much time Sedlock should get for possessing 48 guns and explosives. Because he had a previous felony conviction, Sedlock could not own a gun.

"It's not one gun," Porter said. "It's an arsenal."

The Santa Clara County Public Defender's Office represented Sedlock and could not immediately be reached for comment.

San Jose police were serving Sedlock with an arrest warrant in September 2011 when they discovered four pipe bombs inside his home on North Sixth Street. After the discovery, police evacuated an entire residential block and detonated the explosive devices in a hole they dug in Sedlock's front yard.

Officers searched Sedlock's home and found 44 firearms, including rifles, pistols, revolvers, shotguns and handguns, Porter said. Several guns were found in the trunk of an old Thunderbird. Others were found in a cellar.


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Some of the guns were antiques and dated back to the 1800s, Porter said.

"There's no question he liked to collect guns, but he can't," because he was a felon, Porter said.

The 50 felony counts included 44 for weapons possession and four for the explosive devices. Sedlock also pleaded guilty to one count of cultivation of a marijuana plant.

Police did not find any evidence that Sedlock was planning to carry out any violent act with the firearms or explosives.

Sedlock has at least 15 prior convictions, mostly misdemeanors, for offenses including being under the influence of alcohol, battery and possessing concealed weapons, according to court documents. His long criminal history in Santa Clara County dates back to 1985.

Contact Mark Gomez at 408-920-5869. Follow him at Twitter.com/MarkMgomez.