Here we go again. Purists attack a HONEST guy with stupid fucking comments about shit he doesn't care about. Seriously. I sometimes weep for the lack of common sense on the interwabs.
xPhuong, if you go ahead with this, I suggest in looking for the following. It's more practical, and much nicer to look at :
Railed gas-tube.
FN Gunner grip, alternatively known as a "saw" grip (as it is found on FN SAWs).
LMT style crane stock (preferably G&P.. I like their plastic).
LASTLY, an aimpoint replica, or real-deal weapon sight.
There you have it. All business AK, with a modernized PMC touch.
Don't let the Purists get ya down. I think they're stuck in Red Dawn, or something.