After reaching an important support level, General Dynamics (GD Quick QuoteGD - Free Report) could be a good stock pick from a technical perspective. GD surpassed resistance at the 20-day moving average, suggesting a short-term bullish trend.

The 20-day simple moving average is a popular trading tool. It provides a look back at a stock's price over a 20-day period, and is beneficial to short-term traders since it smooths out price fluctuations and provides more trend reversal signals than longer-term moving averages.

Similar to other SMAs, if a stock's price moves above the 20-day, the trend is considered positive, while price falling below the moving average can signal a downward trend.

Over the past four weeks, GD has gained 6.3%. The company is currently ranked a Zacks Rank #3 (Hold), another strong indication the stock could move even higher.

The bullish case only gets stronger once investors take into account GD's positive earnings estimate revisions. There have been 10 revisions higher for the current fiscal year compared to none lower, and the consensus estimate has moved up as well.

Investors should think about putting GD on their watchlist given the ultra-important technical indicator and positive move in earnings estimate revisions.