You can't say it is DAO. When the gun is loaded and decocked pulling trigger will set the hammer. Walther wanted a safer gun, so they made the QA. If I am wrong let me know.
Thanks sylvest. Its a 9mm. QA stands for quick action. Here is a link explaining more.
http://www.waltheramerica.com/webapp/wcs/stores/servlet/ProductDisplay?catalogId=13152&storeId=10002&productId=58949&langId=-1&parent_category_rn=43803&isFirearm=Y
WTS: Walther P99 QA 500$ OBO
Only had about 200 rounds through it. Great gun. $500 OBO. I just want a better concealed gun.
http://s272.photobucket.com/albums/jj194/MoceanPhoto/Guns/?action=view¤t=_UPW00041.jpg