Two things... first, I would check to see if which foreign parts were swapped out with american ones. You can probably get this information from the seller. Using a high-capacity magazine (anything over 5 rounds) will put you out of 922r compliance if you have more than 10 foreign parts left in the gun. Just trying to keep a buddy out of club-Fed
Now to your question: I can make a video but I am sure there there are a few already. I will try to describe the process..
First, you need to put the bolt into the bolt carrier. On the bottom of the bolt carrier you will see a recessed t