NORRISTOWN — A Philadelphia man who purchased 41 firearms for the ringleader of a multi-county gun trafficking network who illegally obtained and put nearly 100 guns on the streets is headed to prison for more than a dozen years.
Robert Otis Cooper III, 26, of the 1300 block of Colwyn Street, was sentenced in Montgomery County Court to 15 to 30 years in a state correctional facility on charges of corrupt organizations, making false statements on federal firearms purchase forms, dealing in proceeds of unlawful activities and conspiracy in connection with incidents that occurred between 2022 and 2023.
“It is the coveting of guns that is driving this. Guns are an epidemic and they are killing people. We are losing younger and younger members of our society,” Judge Steven T. O’Neill said as he imposed Cooper’s sentence, which included several mandatory five-year prison terms allowable under state law for an illegal gun transfer.
Robert Cooper III is escorted by sheriff’s deputies from a Montgomery County courtroom to begin serving a prison term for his role in a gun trafficking network. (Photo by Carl Hessler Jr. – MediaNews Group)
Cooper was among eight people charged in 2023 with participating in the gun trafficking network led by Larry B. Williams of Philadelphia. Prosecutors said participants used straw purchase schemes to arm the organization.
A straw purchase occurs when someone who is legally allowed to purchase a firearm purchases one and then gives it illegally to someone who is not permitted to purchase that firearm.
With the charges, detectives specifically alleged Cooper, who was legally permitted to purchase firearms, purchased 41 firearms “in furtherance of this gun trafficking organization.” The weapons included Taurus 9mm handguns, Glock .40-caliber handguns and Glock 9mm handguns, according to court documents.
“Such a straw purchase corrupt organization doesn’t exist without the feeder defendants,” said O’Neill, explaining it takes numerous people to run a corrupt organization. “They all played their part. (Guns) were going to people who simply could not have guns in the normal stream of commerce.”
Assistant District Attorney William Harry Highland III argued for a sentence of 20 to 40 years imprisonment for Cooper.
“Your honor, it only takes one gun to cause unthinkable damage and this defendant put 41 on the street,” Highland argued, adding that Cooper was one of the reasons the organization thrived. “The Larry Williams of the world do not exist, these organizations do not exist, without the Robert Coopers of the world.”
Highland, who handled the case with co-prosecutor Blair Rohlfing, said more than half of the 41 guns purchased by Cooper for the organization remain on the streets. Highland argued Cooper purchased two dozen of the firearms in one month.
“He was in a buying frenzy … he was purchasing at a rate that could arm a militia,” Highland argued.
During a Feb. 22, 2023, news conference in Montgomery County, authorities displayed the guns linked to a gun trafficking network. (Photo by Carl Hessler Jr. – MediaNews Group)
Defense lawyer Thomas C. Egan III argued for a sentence of about nine years imprisonment for Cooper, suggesting Cooper suffered from mental health and substance use disorders that made him a pawn for Williams.
“These are precisely the kind of people the Larry Williams of the world prey upon. He is victimized by the Larry Williams of the world,” Egan argued. “Mr. Cooper wasn’t making a lot of money on this project. He wasn’t shooting anyone with these firearms. He wasn’t robbing anybody. Cooper passed all the guns on to Larry Williams.
“He was out of work, out of money, still suffering from the mental illness, and still had an opiate addiction. So, he was combining all of those at the time he made the terrible decision to engage in these multiple transactions,” Egan added on Cooper’s behalf.
Before he learned his fate, Cooper apologized for his conduct and told the judge he didn’t want anyone to get hurt as a result of the straw purchases he made.
“I needed some fast money. That was the worst mistake I made in my life,” said Cooper, explaining he was out of work and needed cash at the time he agreed to purchase the firearms for Williams. “I made a huge mistake and I apologize for that. I learned from my mistakes. I hope you see the good in me.”
During a Feb. 22, 2023, news conference in Montgomery County, authorities displayed the guns linked to a gun trafficking network. (Photo by Carl Hessler Jr. – MediaNews Group)
Members of the network allegedly purchased 94 firearms and attempted to purchase an additional 23 firearms in Montgomery, Bucks, Chester, Lehigh, Philadelphia, Columbia, Northampton and York counties.
Authorities said about half of the illegal gun purchases and attempted purchases were completed at gun shows statewide, including at the Greater Philadelphia Expo Center in Oaks.
Some of the firearms were recovered during investigations of other crimes, including in Pittsburgh and Philadelphia and during an October 2021 gunpoint robbery in Wolcott, Conn., according to court documents.
Previous testimony revealed that about 52 of the firearms are still on the streets.
Authorities said Williams was prohibited from buying, owning or possessing firearms because of previous felony convictions for drug crimes, so he recruited other people who lived in Philadelphia to buy firearms for him. The investigation found that oftentimes Williams accompanied the straw purchasers to gun stores and helped choose the weapons or he directed the purchases from afar using text or phone conversations.
Gun trafficker Larry Williams is escorted by a deputy sheriff from a Montgomery County courtroom on April 17, 2025, to begin serving 22½ to 45 year prison term. (Photo by Carl Hessler Jr. – MediaNews Group)
“Law enforcement identified multiple members of this gun trafficking organization with different roles and responsibilities,” detectives wrote in a criminal complaint. “We know through our training and experience individuals involved in this illegal activity operate in attempt to conceal the true identity of the ultimate possessor of the firearm.”
For each purchase made on behalf of the organization, the purchasers indicated on the record of sale paperwork that they purchased the firearms for themselves and not another individual, detectives said.
“The purpose of this corrupt organization was to illegally obtain and distribute firearms to others,” detectives alleged.
In April, Williams, 42, of Jasper Street in Philadelphia, was sentenced to 22½ to 45 years in prison after he pleaded guilty to charges of corrupt organizations, making materially false written statements or illegal transfer of firearms, dealing in proceeds of unlawful activities and conspiracy.
In June 2022, the Montgomery County Detective Bureau initiated an investigation into illegal activities associated with the gun trafficking organization. Members of the county’s Violent Crime Unit followed the multiple purchases of firearms by the defendants through the state’s Electronic Record of Sale (EROS) system and through hard copies of ATF and Pennsylvania State Police forms at gun stores.
Detectives used surveillance, interviews, information from law enforcement agencies, call detail records and cellphone downloads, social media analysis, records of cash transfers, inspection of forms used in purchasing firearms and other methods of investigation. Collaboration between law enforcement agencies and increased data sharing through initiatives like Track and Trace aided in uncovering the scale of the widespread operation.
The following law enforcement organizations participated in the investigation: the Office of Attorney General’s Gun Violence Task Force; Montgomery County Detective Bureau’s Violent Crime Unit; Bucks County District Attorney’s Drug Strike Force; U.S. Department of Justice, Bureau of Alcohol, Tobacco, Firearms and Explosives; Pennsylvania State Police; Pennsylvania Board of Probation and Parole; FBI Bucks Montgomery Safe Streets Task Force; U.S. Marshal’s Violent Crimes Fugitive Task Force; New York State Police and multiple police departments including Abington Township Police, Philadelphia Police, Middletown Township Police, Wolcott, Conn., Police, Darby Police, New York City Police and the Pittsburgh Police.