Merchant-based Gun Control
The merchants will happily abide in the gun control, as long as they get good lending rates from the Central Reptilian Reserve.
Stopping gun sales is alot trickier than tracking the payments for them. This is where everything is headed.
The Central Bank Digital Currency is the ultimate play here. To be able to micro-manage your purchases, even program in the money what you are allowed and not allowed to buy.
Bug sandwhiches anyone?