In my garage is a box of 2.5 and 3.5 inch exhaust pipe, some left over from one project, and a stock of stuff for a planned project.
I have bomb making materials if the feds decide I am a menace.....
Heck, if you're an old guy with a couple Alka-Seltzer tablets in a plastic tube, that's all they need if they want to hassle someone. Obama-nation, abomination, they think they're hearing bombing the nation. Crazy times.
A 12 ga. shot gun shell fits perfect in 3/4” PVC.
One potato gun can get you busted.
If the Fed wants you they will get you.
The choice is how you want to go.