Well it's not like you're going into a real combat situation, so real steel although good, probably is a bit over the top IMO.
I'd personally look for a good china clone (hey, some of them are actually pretty good copies). There are some retailers who sell optics and all that so once you get AV'ed you'll be able to find a tonne of optics from retailers and the classifieds. Failing that, if you "want nao" then go either check a local army surplus store or a hunting store.
Also Huang's store in Oriental Centre I believe is a good place to go for parts and gears. If he's not there I believe he lives 5 minutes away so give him a call.
ಠ_ಠLess QQ more Pew Pew
READY TO >> RACE