Support Arab Spring by Selling Arms to Existing Regimes?

The United States, supposed proponent of the Arab Spring (unless it is not entirely convenient), sold $66.3 billion in arms abroad last year. Russia was second - at $4.8 billion. $33.4 billion of those arms were sold to Saudi Arabia. That figure alone broke the previous record sales of US arms - $31 billion in 2009. Other notables included Oman and the United Arab Emirates. On the bright side, no major sales to Syria?