[supercat]

It's easy to modify something like an SKS so it will "probably" fire multiple rounds without you having to pull the trigger for each one. Indeed, if you stick some gunk in the bolt so the firing pin jams forward, it will probably fire a bunch of rounds without you having to pull the trigger at all.

Of course, such a weapon would be extremely dangerous to everyone--including the shooter. For safe operation, locked-breach firearms need a mechanism to ensure that a round cannot be fired before be breech is locked. This is typically handled by disconnecting the trigger from the sear until the bolt carrier is fully forward. Disabling this mechanism may cause such a firearm to fire full auto, but only until it jams on an improperly-ejected or loaded cartridge, blows up from a ruptured casing, stops because the hammer either falls before it can fire a round or else snags on the bolt carrier, or has some other calamity.

[MarkL]

Of course, such a weapon would be extremely dangerous to everyone--including the shooter. For safe operation, locked-breach firearms need a mechanism to ensure that a round cannot be fired before be breech is locked. This is typically handled by disconnecting the trigger from the sear until the bolt carrier is fully forward. Disabling this mechanism may cause such a firearm to fire full auto, but only until it jams on an improperly-ejected or loaded cartridge, blows up from a ruptured casing, stops because the hammer either falls before it can fire a round or else snags on the bolt carrier, or has some other calamity.

Exactly... At a weekly "practicle shooting" match, one of the competitors had a 1911 where the disconnector broke, and on the first trigger pull, all 9 rounds (8+1) were discharged... After a moment's pause, he dropped the magazine and began to reload, but the RSO grabbed him and called a DQ... Pretty cool to watch, actually. But extremely dangerous.

Mark