I have some Aug Parts Kits. I was planning to do a Nylaug build but haven't had time and so I'm going to clear these out for other things. The kits both come with a semi auto fire control group and KAK barrel. One of the kits is a surplus parts kit with a KAK 5.56 barrel. The other kit has a new Nato style stock that takes the same magazines as an AR. This one comes with a 300 Blackout KAK barrel, KAK adjustable gas block and surplus bolt carrier group.  $300 for the Surplus kit and $500 for the Nato kit.