AJ G, This firearm is the same size as Glock 19, CZ P10C, MP 9c etc. With a 4" barrel and 7.2" overall length. It is a service size carry/compact. Not full size like the Springfields with the 5.25" barrel.

AJ, This model is a full-size service pistol suited for any role from uniformed duty to concealed carry and personal defense. Comparison of size is here : google.com/search?q=xd+full+size+vs+subcompact&source=lnms&tbm=isch&sa=X&ved=0ahUKEwi4xLjsu6viAhWqnuAKHeOSCVcQ_AUIDygC&biw=1280&bih=596#imgrc=464X2Gmr0UxNkM:

AJ, full size- the compacts look like this budsgunshop.com/catalog/product_info.php/products_id/3883/springfield+xd+mod+2+sub-compact+40s%26w+3%22+black+9%2b1%2f12%2b1 (out of stock at the moment)