New from Olympic, these new bolt/carriers are fantastic. Go to their site to read about them.
I have eight available. Price is $115 each, or $875 for all of them. Price is delivered!
[url=http://www.olyarms.com/blaktac.html]Oly Arms Blac-Tac Armour[/url]
These come complete, with carrier, key, screws, bolt, cam, firing pin, retainer, ejector, extractor, and rings! Not to mention the ejector spring and retaining pin, and the extractor spring and retaining pin!