LANTAC E-BCG®, Enhanced Bolt Carrier Group. 6ARC Variant features special Bolt & Firing Pin. M16 Full Auto Style for increased mass and lock time.Our BCG is precision machined from 8620 steel with a shot peened bolt manufactured from Carpenter 158 or 9310 and Magnetically Particle Inspected. The entire carrier assembly is QPQ (Quench Polish Quench) Nitride coated Black, this is a specialized type of Nitrocarbrizing Case Hardening that creates a very hard, smooth surface with increased corrosion resistance and low coefficient of friction.The carrier’s patented and patent pending design features unique shrouded and forward facing gas ports that have also been resized so that gas is vented differently to a standard carrier.This results in a system that runs flatter with a smoother energy pulse and a softer start to carrier movement.
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