[John Jamieson]

Yes, I do! Nail guns that use special .22 shells, shoot hardened nails into concrete and are used in new construction. The casing probably would not say SuperX which sounds like a real gun. I'll google it.

Police don't use 22s, they consider them too light.

7 year old kids do love to pick up strange things. I would believe that Danielle had picked it up, if it weren't for the fact that it was missed the first day.

[EllaMinnow]

John, do you think it's possible that it was on a shelf and fell down and rolled sometime during the night?

[Freedom2specul8]

Yes, I do! Nail guns that use special .22 shells, shoot hardened nails into concrete and are used in new construction. The casing probably would not say SuperX which sounds like a real gun. I'll google it. Police don't use 22s, they consider them too light.

That is amazing..so an unknowing person might not be able to tell the difference.. of course, i guess the super x solves this mystery eh?