YouTube amateur gunsmith (and we do mean amateur) Royal Nonesuch has graduated from slam-fire shotguns to a more advanced double barrel 12 gauge that shoots around corners.
Of course, the twin pipe plumber’s special is still slam-fire in action (using springs) but ‘Royal has rigged up a trigger system and crude mirror/aiming reticle (it’s an eyebolt) to keep the budget low.
Problem is, both barrels go off at once– at least in early tests– and the gun is far from accurate (did we mention the mirror and eyebolts?) but it does kinda sorta work. If you are close enough.
Don’t try this at home kids.