Under the Radar: Ruger Reloads

"Under the Radar" is a daily feature that uncovers little-known companies worthy of investors' consideration. Check in at 5 every morning to find out about stocks that tend to beat their bigger brethren.

There are ways to profit from political swings.

Since the Democrats captured the White House, the stock market, and TheStreet.com Ratings' model, has warmed up to the health-care industry, which is likely to benefit from government aid.

Another niche that has become attractive is arms production. Some gun enthusiasts, fearing what they say may be an unfavorable shift in public policy, have started hoarding firearms and ammunition. ...