Jacob Abel Ramos, 45, a reported prolific graffiti artist who goes by "BIER," is convicted of gun charges after police reportedly found a gun manufacturing workshop at his Portland residence. (File photo)

A reported prolific graffiti artist who goes by “BIER” faces gun charges after the Portland Police Bureau reportedly found a gun manufacturing workshop at his Portland residence.

Jacob Abel Ramos, 45, was convicted on Wednesday, June 25, for five counts of unlawfully manufacturing, importing or transferring a firearm; six counts of attempted manufacturing, importing or transferring a firearm; 10 counts of felon in possession of a firearm; and unlawful possession of a short-barreled rifle.

Police started investigating Ramos in 2022. A search warrant at his residence in April 2023, as part of the graffiti investigation, revealed 10 firearms, of which five were believed to be homemade, according to a news release.

One of the five firearms was reported as “largely 3D printed,” and another was determined to be a homemade short-barreled AR-15 style rifle, police said.

According to court records, during the search of Ramos’ home, police reportedly found more than 60 cans of partially used spray paint, a “vast collection” of gun-related materials and firearms, 500 rounds of ammunition, a Kevlar and ballistic panel vest, 3D printed suppressors and many firearms.

Other evidence relating to the still-open graffiti allegations was also seized as part of this search warrant.