Received the A2 today, first impressions are:
The body feels absolutely amazing, it feels like it's one solid mass with no creaking at all. Assembly is easy as can be, literally slide in, push a button and done. Admittedly I'm not a fan of the M-Lok handguard but that's just personal preference. What drew me to the SSR over others was the metal upper rail, and the modernisation of the platform.
The trigger, oh my, the trigger ?
It has a very smooth trigger pull, unlike the snow wolf aug I had prior (Although to be fair, may have just been a bad one?) and a very nice break between semi and full auto giving you a subtle indicator that you're about to go into the realm of brrrt. On top of this, the ability to spam the trigger (On a 7.4v, it recommends an 11.1v but I don't have any) on semi is beautiful. The safety bar is also incredibly smooth with a nice "thunk" when you're in safe/not safe. It chrono'd at roughly 242 on .25g BB's with the hop not adjusted at all from factory, didn't have the time to really mess with it too much so I'm assuming the hop may be nearly off.
I'll be taking it out to a game with me next weekend, but I'm blown away by the absolute beauty and feel of it. I think it may replace my RPK as my go to pew for now... ?