(apologies if i'm jumping ahead of Seebee here) On my end, the trigger is the best i've pulled, very light second stage, sometimes a little grit on the first stage but nothing i would complain about (it's not saying too much, i haven't pulled many high end triggers for comparision, but i really enjoy the AP16). I have the compact, when i get it back i'll share some pictures and info on what was up with it.
I have only shot it with iron sights, in the 10 yard range, standing, if there is a miss it's my fault. I am confident when i put the scope on it i'll be going out much further than that. Feels good in the hand, had to figure my hold on it, as the tooling of the metal where your middle finger wraps around has an edge right where you finger rests if you hold it wrong, i make this sound worse than it is, but that bevel in the machining could have gone higher to be perfect (but it does look great), while i am content with the stock wood grips i would be interested in trying out grips like seebees.
I'm a right handed shooter, cocking is excellent, often times after loading in the magazine i throw the lever home with my right hand thumb, so one handed operation for closing the bolt. I really appreciate how the Ataman magazine is designed, fast and easy to load in any order, and you can load it without removing it if you want (the top chambers are fully accessible). Being open does mean you could get debris in there more easily than a sealed magazine like the Benjamin's, but the practicality of the Ataman design i have found so much faster and convenient to load.
The safety is backwards to how most of my guns work, in the direction you push it off. BUT this is actually a great thing, you can push the safety off with your thumb, if you do that it is Very natural and none of that awkward workings with your index finger. Keep your trigger finger at ready, and use your thumb high on the grip to depress the safety. this benefit is to Right handed shooters, the gun does favor righties, but is still workable for lefties.
Noise, hardly anything from the hammer and spring, but the report does have a crack to it, i'm trying to think of a comparable sound for it, because "a loud airgun" is still miles quieter than any .22lr center fire, even subsonic rounds. I suppose if you were to take a dry stick, 1/2 inch round and break it, the noise might be similar, but that is still very subjective. It's quiet enough that i don't want hearing protection, but loud enough that i have the moderator from Krale on the away. I intend on using the moderator for when i'm target shooting all day and its just nice to have it hush hush, or if i am purposefully out on the hunt and want a greater chance for follow up shots when there are multiple opportunities. What is great about that, is i get to choose when and where the gun is compact, no other pistol i have seen out there is in the 12" range, every other repeating .22 is easily 16" or more. I was worried about the noise when i first bought mine as well, but it really is a minor issue after i got it and i'm buying the moderator more so because it is inexpensive so why not.
Mine has not exhibited any pickiness for ammo type, but I will know better once i have the opportunity to Scope it and shoot from a resting position, also the magazine holds the JSB monsters and H&N pile drivers, so i have yet to find a pellet that is too long for it. (chambering the pile drivers was snugger than i like and i probably won't continue using them, but it likes the Monsters alot)
For a $999 pistol i would have like a click type adjsutable wind-age and elevation rear sight, but while the iron sights are basic, they are robust and look great. I painted my front post yellow with a thin black line down the center, tiger eye, made it easier to sight for me. I don't have a chrony, but the regulator seemed to do its job well (until it started giving issues which it went in for warranty work, will have more info on that hopefully soon), i was seeing 21+ shots per fill, and most the time i was filling to 250-275 bar. Hand pump filling is all i do, and it's pretty quick to fill that little tube, the last pumps to top it out to 300 asked more body weight on the pump, but i could fill that thing all day with a hand pump. (i am currently working on a backpacking hand pump, will share more when i've got the prototype up and running).
To date it is my favorite gun to shoot, and i'm itchy to have it back.