medyo problema 'yan, kom AKNG. hindi tatamaan ung mek if you do it right. pero medyo makulit tamang installation ng optics side plate. visit tantal. there's a specific
page for optics mounting systems and
another page for mounting threaded side plates. check these out for more info.
if doing the mods seems hard for you or your smith, it might be better to change receivers. pero kelangan mo pa ring baguhin un to use the proper mags.
so it might be better overall to mod the receiver if you want to use ung tamang mags.

btw, kom vityaz is also working on replicating the side mounting plate for the romak. working only from pics so the outcome might not be totally compatible. he needs a PSO sample to get it really right. but right now ala pang makuhang murang PSO