STANAG magazine
Modern combined arms doctrine dictates that every infantry unit should have a certain percentage of dedicated grenadiers, or soldiers equipped with a grenade launcher or combination rifle/grenade launcher. The criticism of this doctrine is that if the grenadiers in a group are disabled or separated from the group, then the group has completely lost the grenade launcher as a heavy fire support. With the addition rifle grenades, each soldier would be equipped with a small number of rifle grenades, so every individual soldier could use some form of heavy firepower. However, all of these rifle grenades add additional weight to the soldiers war-load and as a consequence they must reduce the amount of rifle ammunition that they carry. For example, a modern French AC58 "bullet trap" rifle grenade weighs .5 kg, the equivalent of a loaded M16 STANAG magazine.