ST. LOUIS (AP) - With lethal-injection drugs in short supply and new questions looming about their effectiveness, lawmakers in some death penalty states are considering bringing back relics of a more gruesome past: firing squads, electrocutions and gas chambers.

Most states abandoned those execution methods more than a generation ago in a bid to make capital punishment more palatable to the public and to a judicial system worried about inflicting cruel and unusual punishments that violate the Constitution.

"This isn't an attempt to time-warp back into the 1850s or the wild, wild West or anything like that," said Missouri state Rep. Rick Brattin, who this month proposed making firing squads an option for executions. "It's just that I foresee a problem, and I'm trying to come up with a solution that will be the most humane yet most economical for our state."

Brattin, a Republican, said questions about the injection drugs are sure to end up in court, delaying executions and forcing states to examine alternatives. It's not fair, he said, for relatives of murder victims to wait years, even decades, to see justice served while lawmakers and judges debate execution methods. Like Brattin, a Wyoming lawmaker this month offered a bill allowing the firing squad. Missouri's attorney general and a state lawmaker have raised the notion of rebuilding the state's gas chamber. And a Virginia lawmaker wants to make electrocution an option if lethal-injection drugs aren't available.