http://www.aimsurplus.com/product.aspx?item=XBCG10016A
ARES ARMOR marked Nickel Boron 5.56/.223/.300 BLACKOUT Bolt Carrier Groups. Machined to Military Specifications. This great BCG features a properly staked Gas Key, 8620 M16 Carrier and 9310 Bolt. All properly heat treated for superior strength. Bolt and Extractor are shot peened.
More info on the BCG here:
http://aresarmor.com/store/Item/nickel_ ... rier_group
