The shocking display came less than a week after a twisted gunman used an AK47-type weapon to kill 22 people in a Walmart in El Paso, Texas.
It is the latest in a series of gun-related incidents that have been reported at Walmarts across the US since the massacre.
Cops say the camouflage-clad man walked into the Walmart in Springfield, Missouri, on Thursday and started pushing a shopping trolley around.
He was wearing body armour, military fatigues and was carrying tactical weapons.
Police say the man was recording himself walking through the store using his phone.
The store manager at the Neighborhood Market pulled a fire alarm, urging shoppers to escape the store.
Police say the man then made his way out of an emergency exit where a firefighter held the man at gunpoint.
At that moment Springfield Police arrived on scene and detained the
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read the article for further Wal-mart incidents.
notice how someone with a gun stopped the man with a gun
the crazies are coming out of the woodwork though