[MultipleParadox]

@archangel
Much more complicated?! you must be kidding:

Gbbr:
2 receiver pins, no tool required;
open, remove bolt carrier and charging handle, clean, relube, done.

Aeg:
2 pins, some models are screwed
Small trigger pin (need a punch); remove mag catch (need a screwdriver or allen key)
Remove stock
Unscrew buffer tube (different screwdriver)
Remove buffer tube
Split receivers
Wigle the gearbox out of there
Remove 8 screws with another 2 different screwdrivers
Insert screwdriver in spring guide
Split gearbox shell hoping everyting will go alright
...
And I'm sure I forgot a step or two...

Yeah, you have to maintain gbbr more often; but you can do that 10times before you can do it once with an aeg in term of time it'll take you