What US parts are on a SAR1 right out of the box?

Fire control group (3 parts)
gas piston (1 part)

At least these 4 parts.  BTW, the Centuary fire control groups are usually crap.  I like others replaced mine.

the pistol grip is a US part as well..........there are 5 US parts in it, which  leaves 10 foreign parts on the SAR for it to be legal........the ATF has a list of 16 parts to a AK, but since the SAR does not have a muzzle attachemnt, it's not counted. however, if you plan on adding a muzzle attachment, just make sure it is either a US one, or if a foreign one, you will need to swap out one of the other foreign parts with a US one.....like the floor plate, or follower

I added a US brake, a foreign grip, and a US stock. I basically added 2 US parts and removed 1. I just wanted to be correct and legal.