Palmetto State Armory for this:
A South Carolina gun and accessories company is selling semi-automatic rifle components inscribed with “You lie” – a tribute to the infamous words of 2nd District Republican Congressman Joe Wilson when he shouted at President Barack Obama during a congressional speech about national health care reform in the fall of 2009.
“Palmetto State Armory would like to honor our esteemed congressman Joe Wilson with the release of our new ‘You Lie’ AR-15 lower receiver,” reads a portion of the company’s website.
So yeah. The implication is a handgun to be aimed at the president.
I don't even know what can be said about this beyond what you're thinking at this very moment. My hunch is something along the lines of "what... the... fuck."