[lurkingknight]

well the mg36 itself is on shakey ground. there are those that argue that it was never purchased by a fighting force and never put into service... so it never made it past prototype because the standard full length g36 was good enough to fulfill that role... So there are probably fighting forces out there that run a full length g36 with a betamag as a support weapon. Purists will still tell you it's not a support gun. I say it's all larp anyways, who the fuck gives a damn about how you have fun.

There's an increasing number of converted or re-purposed rifles that are being put into use as support guns such as the l86 with a drum and super long barrel and the m24 IAR among others. The IAR is just a full length 416 with a heavier barrel that runs off STANAGs and according to wikipedia, beta Cs are being tested on it.

I would say use the one that works best and to hell with the haters. go and shoot bitches.

In the end, those are questions you need to ask individual game organizers.