The most common way is to finish the barrel blanks in the US - push rod, handguard, small fire control parts. Things you see in the 922R kits. I suspect one of the stock moulds is actually sitting in the US. In fact, it may make sense to ship certain US parts back to the EU for the EU guns. Globalization of the supply chain. Cheaper do continuously run certain things in the US than doing change orders in the EU.
The 9 and 11 comes into the US from the EU as pistols.
