I have no practical experience with an MK90 (I have a Saiga 12 AK shotgun and WASR2 in 5.45 x 39mm)...but it is an AK....so:
Reliable? To a fault....it's an AK
Accurate? Not like an AR, but you should be able to exact minute-of-babushka (oops...it's Chinese-made so I meant to say "minute-of-The Great Wall of China") groups out of it from about 12"....but then again accuracy isn't an AK's strong suit....after all....it's an AK
Fun? Absolutely....it's an AK
PITA? Depends, if your sample has a slanted front sight and experiences triggerslap...then yes, it can be a PITA....but hey, it's an AK
Worth having? Well....yes....and you know what the rest of what I'm gonna say.....
Buy it and enjoy!
Reliable? To a fault....it's an AK
Accurate? Not like an AR, but you should be able to exact minute-of-babushka (oops...it's Chinese-made so I meant to say "minute-of-The Great Wall of China") groups out of it from about 12"....but then again accuracy isn't an AK's strong suit....after all....it's an AK
Fun? Absolutely....it's an AK
PITA? Depends, if your sample has a slanted front sight and experiences triggerslap...then yes, it can be a PITA....but hey, it's an AK
Worth having? Well....yes....and you know what the rest of what I'm gonna say.....
Buy it and enjoy!