Geissele Reliability Enhanced AR-15 Bolt Carrier Group 5.56x45mm NATO Nanoweapon Chrome Nitride

The Geissele Reliability Enhanced Bolt Carrier Group is a 5.56mm full-mass, full-auto rated M16/M4 bolt carrier group. The carrier features a properly torqued and staked, Chrome Lined, Nano coated, gas key. The cam pin is machined from an advanced tool steel also used to produce medical instrumentation known as H13, it is then coated with Nanoweapon (Chrome-Nitride) for maximum corrosion and wear resistance. The extended upper rails on the carrier also provide much greater stability and dramatically increase feeding reliability. The Carrier is coated with Nanoweapon for maximum corrosion and wear resistance. The Geissele Stressproof Bolt is made from Carpenter 158, however this is not your typical material spec'd by the US Government. Since Geissele wanted to take it to the next level, engineers worked directly with the Carpenter Steel metallurgists in Reading PA, to produce a special type of material known as Carpenter 158+. This material is cleaner with less impurities, ulti...