Guns.com posted their review of Walther PPQ M2 5-inch. This is the PPQ M2(button magazine release) with longer slide than the original PPQ. You can also see the cheesy review video in the article.
http://www.guns.com/review/2014/05/07/from-walther-with-love-the-new-ppq-m2-5-inch-video/
From: Guns.com