Nickel Boron BCG’s? This one:
http://www.spikestactical.com/new/z/bolt-carrier-group-spikes-nickel-boron-hptmpi-m16-bcg-556-p-388.html
I ordered one on Thursday and I already cannot wait to get it.
http://www.aimsurplus.com/product.aspx?item=XST4BG23&name=Spike’s+Tactical+5.45x39+NiB+M16+Bolt+Carrier+Group&groupid=55
This isn’t Facebook or Twitter. Just wait for it to arrive.