1- Yes
2- Yes
3- No (
http://www.guay2.com/ )
4- question answered
5- metal bodies and one peice metal outter barrel will prevent wobble.
6- The SR-25 version you're looking at is a limited edition CNC. I think only 50 were made and I have 1 of them. :-D You will have a hard time finding anymore of them.
7- SR-25 mags are metal
8- SR-25 mags are not the same as M-16
Same advice. Email a Canadian retailer and ask if they can get one for you. The SR-25 is not really too much longer than a M-16. The real SR-25 is a semi only weapon and would suck if you played FA with it. It still uses a version 2 gearbox which is prone to cracking when upgraded with a stronger spring.