Geissele Automatics 5.56 Reliability Enhanced Bolt Carrier Group

The Reliability Enhanced Bolt Carrier Group is a 5.56mm full-mass, full-auto rated M16/M4 bolt carrier group manufactured in Geissele’s state-of-the-art manufacturing facility in North Wales, PA. The carrier features a properly torqued and staked, chrome-lined, gas key. The cam pin is machined from 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 (Chrome-Nitride) 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, their 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 fewer impurities, ultimately making it stronger and more consistent. Geissele did not stop there, they decided to forge the bolt. Using the same process used to produce upper and lower receivers, a forged bolt manipulates the grain structure of the metal and yields a bolt capable of 5 times the life of a mil-spec bolt. Each bolt is then rigorously inspected, high pressure tested, mag particle inspected, and coated with Nanoweapon for maximum corrosion and wear resistance.

• Features a forged bolt manipulates the grain structure of the metal and yields a bolt capable of 5 times the life of a mil-spec bolt.
• M16 cut carrier
• Carrier Material: 8620 Steel
• Bolt Material: Carpenter 158
• Finish: Nanoweapon (Chrome-Nitride)
• Caliber: 5.56mm
• Maximum corrosion and wear resistance.
• Each bolt is then rigorously inspected.