The 5.56mm M4 Pouch, holds 2 x M4 – SA80 style Mags (including P Mags) H&K 416, Diemaco, Sig 516 etc.
it has role back lid which can be secured in the open position in preparation for a speedy mag change.

Each pouch has 2 MOLLE arms at the rear for attachment and takes up 2 horizontal rows of MOLLE.