My son-in-law works for a local pipe company. He was telling me how many people have come in recently buying short sections (4 foot, etc.) of their Big Blue PVC pipe (blue sewer pipe) and various end fittings. He finally asked one of the customers as to why the sudden demand for this in the shorter lengths...the response he got was "I'm vertically burying it to hold some firearms and ammo".
I never would have never guessed that had I not been told.
...anyone else heard of folks doing this? I guess this pipe is the ticket for doing this due to how its made. I have no clue...just thought I'd share it.