General Dynamics (GD Quick QuoteGD - Free Report) is looking like an interesting pick from a technical perspective, as the company reached a key level of support. Recently, GD crossed above the 20-day moving average, suggesting a short-term bullish trend.

The 20-day simple moving average is a popular investing tool. Traders like this SMA because it offers a look back at a stock's price over a shorter period and helps smooth out price fluctuations. The 20-day can also show more trend reversal signals than longer-term moving averages.

Like other SMAs, if a stock's price is moving above the 20-day, the trend is considered positive. When the price falls below the moving average, it can signal a downward trend.

Shares of GD have been moving higher over the past four weeks, up 10.9%. Plus, the company is currently a Zacks Rank #3 (Hold) stock, suggesting that GD could be poised for a continued surge.

The bullish case only gets stronger once investors take into account GD's positive earnings estimate revisions. There have been 5 revisions higher for the current fiscal year compared to none lower, and the consensus estimate has moved up as well.

With a winning combination of earnings estimate revisions and hitting a key technical level, investors should keep their eye on GD for more gains in the near future.