Need more info.
An sar48 and sar4800 are true Imbels imported my Springfield armory.
M444's are imbel receivers built with imbel parts, and required us as well.
True aussie imports are Eden receivers built here into rifles.
Poyers are the only true aussie built l1a1's to be imported as such there are only 158 in the country.
Century arms did import sear cut Brit l1's as well for Leo sales. They have leaked into the free market
Quality, i personally put imbel over fn. Fn's have lots of machining marks.
What else do you wanna know?
Here is an all imbel para. Okay, some us parts. My favorite.