When all you've got for cover is light brush, you gotta get low! The bane of living in the desert...
No gun of mine remains stock for long, I love experimenting with different hop up buckings and perform gearbox tweaks on every AEG I own.
I will usually run as Rifleman, but here are all my position load-outs:
Rifleman - MK12/AK47 as mentioned above + KWA MK23 + plate carrier
Support Gunner - A&K M249 with nutsack mag + standard box mag
Sniper - JG BAR10 completely gutted and upgraded with an effective range of 270 feet, home made QD ghillie, KWA MK23