Ataman parts (current) availability

Still deciding on my first PCP rifle...

I'm leaning toward buying the Ataman BP17 (yes, I like the look, is part of the decision).

On one hand, it will be a semi-short range target/fun rifle, so parts breakage "shouldn't" be a problem. On the other hand...I understand that parts fail.

So, my question is, are Ataman hard parts difficult to get in the US ? Not really speaking of o-rings, I'd assume that they are stock parts in many good general parts houses (McMaster Carr, etc.). More like hard parts that may fail. Cocking arm mechanism, parts in the firing mechanism, etc.

Mike