In the IT field (and I'm not insinuating this is their case), but many dodgy companies do the old "we lost your abc", when they have serious cashflow issues. How they work it (in IT) is you'd place an order. They'd have other orders come in and use YOUR money to buy and pay off that order, get that order in, ship it out, and pay their supplier. You'd call up "where's my f'n order", and they'd say "oh its delayed a week". In that week they'd wait for someone else to place and order and use their money to buy and ship your goods.
Rinse and repeat.
They have stuff all overdraft/overhead as they are never really using their own money, whilst profiting small amounts from pricing things at rock bottom prices.
It's a shit way to do things and I'm glad when arseclowns like that go under, as its not the way to run a business.
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Back on the topic at hand though, if they genuinely have misplaced a weapon, gees I would not want to be them once the authorities are informed, and it would bring into question how many others they have lost in the past.