Federal agents yesterday released pictures of 26 machine guns, sniper rifles and other weapons stolen last month from two Marshall gun dealers after a gun show in a Philadelphia suburb.

The U.S. Bureau of Alcohol, Tobacco, Firearms and Explosives said the Dec. 21 theft of the guns in King of Prussia remains under investigation but would not reveal any details.

Spokesman John Hageman said 23 of the weapons belonged to Arms and Ordnance and three to another dealer called Bloodhound Arms.

Arms and Ordnance is owned by Charlie Logan and Bloodhound by Scott Van Gorder, both federally licensed machine gun dealers, according to state records.

The businesses share an address in the Frederick Logan Co. building at 140 Commonwealth Drive in the Warrendale section of Marshall, where ATF agents arrived after the thefts to examine the inventories and license paperwork.

Mr. Logan, who initially hung up when contacted yesterday, angrily refused to comment on the investigation.

Mr. Van Gorder, who incorporated Bloodhound Arms in 2006, could not be reached.

According to police and ATF agents, the guns were stolen from Mr. Logan's pickup, which was parked at a restaurant in King of Prussia, between 7 and 8:30 p.m. Dec. 21. He had just left a gun show at the Valley Forge Convention Center in Upper Merion Township and stopped for dinner before heading home.

Three of the guns he was transporting belonged to Mr. Van Gorder.

ATF, which is examining the possibility that Mr. Logan was followed by someone who attended the show, is offering a $10,000 reward to anyone who has information.

Another dealer was burglarized in September following the same Valley Forge event, and Mr. Hageman said his agency is working with the show to improve security measures.

In online gun forums, many firearms enthusiasts have lambasted Mr. Logan for not keeping a better eye on his valuable collection, which included 14 machine guns.

Mr. Hageman would not comment on whether either dealer is under investigation.

On the Pennsylvania Firearms Owners Association, some enthusiasts also worried that the machine guns will end up on the streets of Philadelphia.

While stolen machine guns might be more difficult to sell than more nondescript weapons like handguns, Mr. Hageman said gun buyers can always be found.

"There's a market for everything," he said.

For a list of the guns and their images, go to post-gazette.com.