On a block of tidy, Tudor-style duplexes in Ozone Park, the Addiego residence was the odd one out, with its barred windows,” Beware of Dog” signs, and American flags interspersed with life-sized plastic geese wearing handknitted sweaters and matching caps.

“Can’t you tell it’s a very odd place?” said Robert Moore, 51, whose brother-in-law was allegedly menaced by an assault rifle-wielding resident of the home.

Despite the home’s eclectic exterior, police officers were still surprised at what they found inside the two-story brick duplex Tuesday night. The house, inhabited by convicted felon James Addiego, 42, his octogenarian mother, and an unknown number of caged pit bulls, allegedly concealed a cache of illegal firearms and crossbows – including one assault rifle and a marijuana plant – and thousands of rounds of ammunition, according to police.

“We searched every room in the house and we found numerous guns in the home,” said Police Officer John Maderik, one of four officers from the 106th Precinct who arrested Addiego at his 84th Street residence at 8:12 p.m. Tuesday. “We never expected to find this many.”

A spokesman for Queens District Attorney Richard Brown said Addiego was being held last night, awaiting arraignment in Queens Criminal Court on charges of criminal possession of a weapon in the second degree, which carries a maximum sentence of 15 years in prison.

Officers made the discovery after they responded to a 911 call from a victim who claimed that Addiego menaced him with an AK-47. Police said the victim got into a dispute with Addiego over the ownership of a dog, and Addiego allegedly answered his door with a Romanian SAR-1 assault rifle, which bears a strong resemblance to an AK-47.

Addiego surrendered peacefully to police “to make things easier” on his 82-year-old mother, said Officer Maderik, and was charged with menacing and multiple counts of criminal possession of a weapon.

Police said the weapons tally was eight rifles, two handguns, three crossbows, a bulletproof vest, and 5,000 rounds of ammunition. In addition to the SAR-1, the firearms included a .45-caliber Thompson submachine gun, a 9-mm Kel-Tec SUB-2000 rifle, and a rifle of indeterminate make with the barrel and stock sawed down to a pistol form.

As a convicted felon, Addiego is prohibited from owning firearms. Addiego served more than one year for attempted criminal possession of a weapon and was released from Queensboro Correctional Facility in 1997. Police said Addiego has four additional prior arrests, though the reasons are unclear.