Legality?

[Thompson-]

I have a C&R question.if I put a non-norinco chinese SKS into an aftermarket stock,

this one http://www.cheaperthandirt.com/60532-1.html


What is the legality of this weapon?
if I need to get 922r parts where can I get them fairly cheap online?

Any and all help is graciously accepted

[Quiet]

*If you change the stock on an imported semi-auto centerfire rifle to a folding stock, then Fed 922r parts compliance is required.

[R.Fisher]

also if you live in Cali it cannot be less then 30" in its smallest configuration.