There is always the gun. (gunshot) Even the old fashioned Smith & Wesson 38 revolver, is capable of penetrating a house door, from a distance of 60 yards. (shotgun cocking) The shotgun, firing buckshot, will penetrate a car door from 20 yards. (gunshot) Anyone behind that door will be hit. The high velocity sniper rifle can penetrate a foot thick railway sleeper, from a distance of half a mile. (gunshot) Such weapons and ammunition are increasingly in evidence at scenes of violent crime. As a result, Police forces are now themselves equipped with a range of modern weapons, including Heckler & Kock MP5 carbines and shotguns.