Away back in the naughties I considered getting an AA400 (carbine). Back then the safety catches regularly fell out but they were all pre anti-tamper (how handy was that), they seemed to be reasonably well screwed together and they were very popular.

I'm considering one again.

How does todays AA400 compare with a mid 2000's version? Have the internals changed for the better/worse? Are any of the components cheaper or less robust (i.e. thinner barrels, bits made of plastic etc.)? What have they changed or are they pretty much unchanged?

Any information welcome from you AA400 series experts/owners.