"One concern is that the video appears to be in breach of the requirements under s40 of the Firearms Act 1996 which require a person to secure firearms when they are not being used or carried," Shoebridge, who is also a lawyer, wrote.

"Firearms should be stored in locked receptacles and any ammunition must be stored in a separate locked container. The danger of having firearms and ammunition simply laying around in a garage or den should not be understated."