Both are brand new in the case. The A2 is $15 more. I really don't need adjustable grips, since the M40 guns I have fit my hand perfectly. And I don't anticipate dropping it into mud, so the increased grip aggressiveness isn't a feature I need. I don't hang flashlights and lasers under my guns so that's not an issue. I'm not a big fan of the new hooked trigger guard, since I don't use that type of grip to shoot with. More and more I am leaning towards the A1 version. Especially now that mags are available again. Can anyone think of a good reason to go with the A2?