Michael Steven Cech in May showed a man how to build a bomb, believing that the explosive would be used against a federal witness.
On Wednesday, Cech, 42, of McKees Rocks, was sentenced to 15 years and eight months in prison for distribution of information regarding explosives.
At a sentencing hearing, Assistant U.S. Attorney James Kitchen showed a video of Cech demonstrating to a federal informant the mechanics of building a gunpowder-packed nail bomb.
"That there will take out two houses this way and a house that way," Cech said in the video. "It's going to do what you want. It's going to do every bit of what you want."
The informant had told Cech that he needed to eliminate someone who was set to testify in a drug trial. The informant's face was electronically distorted in the video, which was shot using a hidden camera.
Cech traded his knowledge, plus most of the bomb's parts, for a .45-caliber handgun and $300.neigh_west