There are several benefits to upgrading M4s to M4A1s. Compared to the M4 , the M4A1 has full auto capability, a consistent trigger pull, and a slightly heavier barrel. The heavier barrel is more ...
Still, the M4 MacBook Air is enough of an upgrade to make it worth waiting for. If you’ve been itching to pull the trigger on a new MacBook Air, you’d do well to hang on just a few more weeks.