Gun Toting D-Bag Exploits Hudson Murders for $

If the Hudson triple-murders weren't awful enough -- some sleazeball is now using the tragedy to scare you into buying his company's product.

A. John Peters -- we're guessin' the A stands for A-hole -- sent out a press release with the unbelievable title: "Could a Bedside Shotgun Rack Have Saved Jennifer Hudson's Family from Tragic Death?"

The answer is most likely no. Only one of the three victims was shot in a bedroom.

A-Hole says he didn't issue the release to capitalize on the family's pain -- but are you buyin' what he's sellin'?