Official promotional poster for the United States Marine Corps Forces Special Operations Command posted on their official Facebook page, and interestingly enough, the guy in the picture is wielding an H&K G3 battle rifle. When asked about the rifle, they responded with;
Interesting comments. The men in the arena remain steadfast in their training and developing tradecraft regardless of weapons system…
It could be foreign weapons training, or maybe the guys over there just prefer a little more stopping power than the 5.56mm provides.
Nevertheless, It’s an interesting picture.