>>64251775
AFAIK G11 ammo can't be exposed to atmospheric moisture for long because the caseless propellant absorbs moisture and starts having serious problems e.g. cracking. So you can't use standard clips but instead have to use a sealed storage system to carry ammo around, and transfer the ammo into magazines and load them into the gun just before you expect to use it. Oh, and this means that ammo which is removed from its unsealed storage is going to have to be eventually thrown away if not used.
Similarly, the G11 had to be excessively beefy because the entire receiver body was sealed to protect loaded ammo from moisture, but caseless ammo sucks at preventing gasses from leaking explosive fumes into the rest of the gun so HK's solution was to just design the gun to withstand suffering from internal pressure spikes as fumes repeatedly ignite.
In summary, the G11 is an amazing piece of german engineering autism, but kinda shit as a practical service weapon.