Have been meaning to post -- the British Grab Bag mag pouch (typically available in DPM Desert and their new MTP [effectively a multicam w/ a bit of a swirl to the pattern]) fits 6 VZ58 mags in the front pouches (2 per pouch). Or 9 AR15 mags (3 per pouch). Also intended to hold 2 frag grenades and 1 smoke grenade pouch. The inner pouch is intended as dump pouch w/ the protective flap rolled back.
One of the cooler pieces of gear I've come across in some time. Most British kit is of great quality; don't believe "lowest bidder" is the primary select criterion like in the US... Keepshooting has had this item in the past but best source is ebay when searching "British army grab bag." For the MTP pattern, webbing ranges in color from strap and clips somewhere between US ranger green and coyote to pouch clip webbing being something like CZ's urban gray, which is a mix of fde and wolf gray.
This vid, skip to 7 min mark:
Shoulder strap attachment on ones I have are clips not thread throughs, but otherwise this vid is accurate AFAIK.
In summary, a great piece of VZ58 compatible kit -- perhaps best suited to a home defense or trunk gun type loadout where you won't be donning a battle belt or plate carrier but want ability to carry ample and efficient firepower...