My understanding that a lot of times games in Asia are all about hosing down your opponents with 500+FPS AEG's. There was a group from Pacific Mall years ago. They played HK style games at old Flag Raiders. That's basically how it looked like.
I remember hearing stories about "Terminator" style games in Philippines with 500+FPS and rule that you go down only when you are in pain.

Must be fun to watch the "Teminator" games. Players only leave when they bleed.

6 low caps, and 2 pistol mags.
Anything else becomes to heavy for a GBBR load out.

A couple of times back when I got into AS I played against a team who's primary kit was G36s and AKs with only hicaps. Not to stereotype, but yea, they were all Asian.

8 Low/Mid Caps & 3 Pistol mags, most of the time though I don't get through half my mags depending on the game.

7 real cap
3 pistol mags

8 GBBR mags and 1 pistol mag

I carry 4 p90 mags they only takes around 50bbs..anything more would cause double/triple bb burst on first shot -_- I guess that's really enough lol

also 2 mags of M9 pistol mags

7+1 for my GBBR.
2+1 for my pistol.

8+1 (60 round max) for my KWA ERG
2+1 for my pistol of the day

I've only run out of ammo once

Five PTS TMAGs @ 120 rounds each to feed my hungry PTWK, one in the gun and four pouched.
Three pistol mags @ 25 rounds each to feed my G17, one in the gun and two pouched.

About eight assorted AK-74/RPK74 magazines in my smersh harness plus 1 in the gun.

Not enough and sometimes too many :(

6x 68rd Mid Caps + 1 In the gun
2x Pistol Mags

AK74.. 7+1 low cap
Shotgun. 8 shells +1
Pistol.. 3+1 low cap
M249.. I try only 1 boxmag =D