Badger Guns was ordered (pending appeal) to pay nearly $6 million to two police officers shot by guns illegally sold to a straw buyer. The owner's son took over the store, implementing a variety of changes: But there are also signs laying out strict rules for would-be buyers: “Must be 21 to enter. Proper ID required.” “No cell phones allowed.” And for the droopy-drawered set of possible customers: “Pull your pants up or don’t come in. Try to have some decency and respect. No one wants to see your underwear.” The rules are serious, Schwarz said: Staff members “will ask you to leave” if you show up with a cellphone. The policy is designed to prevent straw buyers from texting photos of guns to friends outside.Mike Allan’s first move was to adopt a members-only model that requires customers to register with the store and to pay a membership fee. Would-be buyers must also demonstrate proficiency with a firearm....