[Daniel Ramsey]

Next terrorist will just buy a dozen or more semi autos and bolt them together on a frame, attach car door lock solonoids to each one and wire it all to a battery, every impulse fires everything at once, wired to a repeating relay they can launch a thousand round volley in that manner. And remotely.

[Scrambler Bob]

Next terrorist will just buy a dozen or more semi autos and bolt them together on a frame, attach car door lock solonoids to each one and wire it all to a battery, every impulse fires everything at once, wired to a repeating relay they can launch a thousand round volley in that manner. And remotely.
= = =

I logically conclude we need to ban cars, batteries, wires,

and large numbers!

[Jed Eckert]

Next terrorist will just buy a dozen or more semi autos and bolt them together on a frame, attach car door lock solonoids to each one and wire it all to a battery, every impulse fires everything at once, wired to a repeating relay they can launch a thousand round volley in that manner. And remotely.

Or:

Shoestring Machine Gun & ATF Letter

This trick has been around since at least WW2 and according to some vets I knew was first used on the Garand.