A convicted felon in Massachusetts is accused of possessing assault rifles along with other firearms and weapons.
Robert Kurtzer, 37, of Weymouth is charged with being a felon in possession of firearms and ammunition.
FBI agents say they've been investigating Kurtzer for the past two months, and on Tuesday, state police stopped Kurtzer's pick-up truck, where they found a knife, pepper-spray, ammunition for several guns, a pill bottle with two types of pills and $6,000 in cash.
Kurtzer also allegedly told troopers that he did not have a license to carry.
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He was arrested, and law enforcement officers then searched his home on Memorial Drive in Weymouth after his girlfriend, whose name is on the lease, consented to a search.
There, police say they found two assault rifles, a bolt-action rifle, two handguns, numerous weapons parts for the assembly of assault rifles and handguns, a firearm silencer, six unfinished firearm silencers, numerous rounds of ammunition, milling machinery to manufacture handguns and rifles.
Authorities add they also found nearly 700 rounds of ammunition in a storage facility under Kurtzer's name in Weymouth.
The FBI did not state why the agency had been investigating Kurtzer.
Kurtzer, who was convicted of armed robbery in 2001, is set to be arraigned on Wednesday, and it's unclear if he has an attorney.