Steyr PRO X (Semi-Auto Bullpup)
Only want to spend $699? Here you go:
Kral Ekinoks Semi Auto at PY
Find me anytime at http://www.Air-Gun-Channel.com
I would personally be worried about the reliability issues regarding anything that is semiautomatic coming from TURKEY. I would go for the Evanix Max Air from Korea if I were to be cheap.
Coincidentally now that you mention semiauto airguns, I actually purchased one in 22 and just received it the other day and didn't get around to reviewing it yet. It has been accuracy tuned by Jefferson State and has a carbon fibre air cylinder and it feels very comfortable and much lighter than your typical Evanix bullpups. It feels a lot lighter and better balanced than my old Evanix Max ML even comparing both of them even without the battery it also feels a lot lighter than my Evanix Rainstorm 3D.
I would wait a bit and check out reviews first before buying the Steyr Bullpup since it cost a lot of money so it doesn't end up like the Ataman Bullpup experience.