I just picked up my first cz527 this afternoon (a consignment gun) in 7.62x39. It handles so well, and is so handy. It came with rings so i topped it with an M8 4x scope. Have not shot it yet... but maybe tomorrow..
about the fiber optic... i would really like one too.. as much as i love scoped rifles, especially fast action scopes like foward scout setups,... as soon as i mounted the scope on the 527, it felt like i lost a touch of its utility... Yes it would be better for some use, but the fast, light, slick factor (which this rifle has with its iron sights) was diminshed a bit. I think i would be happier with just a highviz front, and no optics.. at least for the ranges i would be using this little 7.62x39 for...
after some range time... i will look into changing the mag to ak- maybe inpossible, but interesting...