Dave Kaplan, owner of Combat City in Orlando, said he meets with all customers before they are allowed to enter the combat zone, WKMG-TV, Orlando, reported Thursday.
"First thing, when you get here, everybody's checked. No guns, knives, ammunition on them," Kaplan said.
Kaplan said he replaces the barrels of customers' weapons to allow them to shoot the rubber rounds instead of live ammunition.
"A revolver would work the same, semi auto, the action actually cycles. There's full recoil with the weapon. The assault weapon fully cycles," Kaplan said.
The owner said customers are outfitted with protection for their heads, necks and groins.
Kaplan said the rubber bullets are not deadly, but are more painful than paintballs.
"There is supposed to be a degree of pain so that you do learn from it," he said. "Someone's trying to hurt you. You learn how to be as tactical as a civilian can be."