A large vertical rectangular pouch that went through three versions (Marks I, II, and III). It could carry either (2) BREN magazines, (6) 20-round Thompson SMG magazines, (4) No 36M Fragmentation, No 69 Offensive, or No.77 White Phosphorus grenades, (4) No 36M cup-discharger rifle grenades with attached gas-check baseplates, (2) Smoke Grenades, or boxes of Small Arms Ammunition.