I've built them. The Thorsden stock does seem awkward
I have not used an Ares, and have heard the early ones did not have a great trigger, but they do have a traditional stock, supposedly the new ones are better and they take regular AR uppers
https://www.budsgunshop.com/catalog/product_info.php/products_id/719002890/Firearms/Rifles/Other+Rifles/ARES+SCR+LOWER+RCVR+ASSY+SS+BLK