Interchangable Polymer ak47 followers ?

I have (4) of these mags left and although they are fully-functioning,
the olive drab color for some of these polymer waffles (Finnish Mil Surplus) has faded to brwn

Does anyone know if these 4 followers could be used as "back up" or supplied for other non-Finnish mil mags like Bulgarian "10" or even US poly mags? I've already fired this type of mag ...reliable, "silky-smooth"

PIC (4 left fair cond on outside)
http://i131.photobucket.com/albums/p307/joelAK/6_09_wffl30AK_2LOT_002b.jpg

I'm going to swap the follower with 30 rd Arsenal "10" tonight.

It worked! The Finnish mag parts and design was much more robust, reliable tighter fit, and mcuh simpler than the Bulgarian Waffle "10" (i have no pics, but trust me).

I noticed K-var sells U.S. and some Arsenal magazine parts like follower, but not polymer followers i think. How much would (4) gd cond polymer followers go for and who would buy them??

(I just want to get rid of 4 mags and make some use of at least followers instead of just trashing them)