PTR-91. It's nice -- for a refreshing change -- watching a lady try one of these.
The only discomfort (as in my case) was when she took some shots in the Prone Position.
When Standing or kneeling, the buttstock's contact with a cheekbone is quite Comfortable, and a non-event.
My PTR A3SK (has the shorter, 16" barrel and upper rail) arrived less than three weeks ago.
* Young Slovenian lady Manca also shoots one in videos with "Polenar Tactical". She has much more experience.
If my wife and I ever again visit eastern Austria, I would love a short diversion to shoot a few rounds with them, just south of That border.