Magpul Massoud 7.62x51mm rifle
The Massoud is a concept semi-automatic 7.62x51mm rifle by Magpul. It looks like it is s scaled up Magpul/Bushmaster Masada/ACR. The Massoud takes 7.62x51mm PMAGS.
Click to expand the photos.

Remov holding Massoud

Photos Copyright Remigiusz Wilk (REMOV). Used with permission.
It is presumably named after Ahmad Shah Massoud aka. Lion of Panjshir who was a pro-western Afghan who fought the Soviets. He was assassinated by suspected al-Qaeda agents two days before 9/11.
Don’t expect to see this rifle at your local gun dealer anytime soon, if ever.

Man. REALLY like the name. That is one massive rifle though.
Name is much less tacky. Wish they had named the whole line Massoud.
The Massoud has been around since just after Magpul revealed the Masada. This just seems to be an updated version that reflects the current version of the ACR.
I think the biggest uproar is going to be about the new 7.62 PMAG’s.