I bought a sterling from Crusader Weaponry. It's a really fun gun. Almost no recoil, surprisingly accurate and a lot of fun. Good mags are a little hard to find though, but its a very fun and handy little carbine to have. (I got the carbine length one.) Also, Crusader is beginning to sell rail sections that go onto the outside housing with all the holes. I put a red dot on mine. I've never been one for tradition.
They're great little guns.