Lantac Enhanced Bolt Carrier Group .223/5.56 Black Nitride 01-UP-556-NIT-EBCG
Lantac Enhanced Bolt Carrier Group .223/5.56 Black Nitride 01-UP-556-NIT-EBCG
SKU 01-UP-556-NIT-EBCG-Lantac


  • Item ConditionNew
  • UPC712038709168
  • MPN01-UP-556-NIT-EBCG


The Lantac Black Nitrided .223/5.56 Enhanced Bolt Carrier Group (E-BCG) is M16 full-auto rated for increase mass and and lock time. The entire carrier assembly is QPQ (Quench Polish Quench) Nitride coated Black, this is a specialized type of Nitrocarbrising Case Hardening that creates a very hard, smooth surface with increased corrosion resistance and low coefficient of friction. The carriers 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 with a softer start to carrier movement.

Additionally, the system also runs cooler and cleaner, there is also less pressurization of the upper receiver when running a suppressed barrel. The flared boss at the tail of the carrier enhances the BCG's lock position within the upper and makes it more consistent, resulting in an accuracy improvement.

All E-BCG's® feature the LANTAC CP-R360 patent pending domed head cam pin that is machined from 17-4PH Stainless Steel and hardened to H900 condition. The ultra-smooth head reduces wear within the upper receiver while the E-BCG weight helps increase lock time for smoother operation. Gas keys are fitted with gasket sealer & are properly staked at four points and only grade 8 fasteners are used in assembly. The E-BCG's forward porting and unique shape assist in reducing pressurization inside the upper receiver that can be caused by short barrel rifles running suppressors.

Specifications & Features of the Lantac Black Nitrided .223/5.56 Enhanced Bolt Carrier Group (E-BCG)

  • Weighs 11.7 oz.
  • Full Auto & Semi-Auto Compatible
  • Forward Porting, enlarged vents.
  • Balanced flared boss.
  • 8620 Carrier, Heat Treated, Hard Turned & Ground.
  • MPI Carpenter 158 Bolt, Shot Peened, Hard Turned / Ground.
  • QPQ Nitride Coating
  • CP-R360 Domed Cam Pin
  • Mil-Spec Gas Rings
  • Mil-Spec Staked Gas Key
  • Grade 8 Hardened Fasteners
  • All Hard Chrome surfaces are to MIL-STD-171
  • Shot Peening is conducted with S110 shot, Established by Almen Gage A-2 strip .006 -.008
  • Lifetime Warranty & Made in USA