The DREAD weapon system
Imagine a gun with no recoil, no sound, no heat, no gunpowder, no visible firing signature (muzzle flash), and no stoppages or jams of any kind. Now imagine that this gun could fire .308 caliber and .50 caliber metal projectiles accurately at up to 8,000 fps (feet-per-second), featured an infinitely variable/programmable cyclic rate-of-fire (as high as 120,000 rounds-per-minute), and were capable of laying down a 360-degree field of fire.
Can I have one... please... please!! Can I put the entire Labour Cabinet (and throw in David Cameron for good measure) in front of it? Failing that can I have one mounted on the roof in case the pikeys come past?