Grendel LMG

[stanc]

...I do not believe a QCB should be a requirement for a SAW.

I strongly disagree.

To have the QCB functionality adds a little bit weight, but to actually bring an extra barrel adds much more weight.

There's an extremely simple solution to that problem: Don't bring an extra barrel!!!

I would rather double the number of SAWs in the squad. That way the SAW gunners would be a bit more mobile, and the squad would have a bit more firepower.

That could still be done with a QCB. Having a QCB incurs negligible weight penalty, as proven by the Steyr AUG, Ultimax 100, and Stoner LMG.
Plus, having a QCB avoids the need to constantly remove SAWs from service to replace worn out barrels, since QCBs can be changed by users.