13 low caps for my sk
8 real caps 8 lowcaps for my SPR and M4.
I run only reg/real caps on standard rifleman type aeg's.
I did own an hk21e that had a box mag (weighed 22 pounds)
I havent been a regular on field for awhile though. Last time I was at a skirmish I did notice alot more hicaps. Probably because real/low caps locally are harder to find and cost alot more.