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01-UP-762-NIT-EBCG LANTAC 7.62MM Enhanced Bolt Carrier Group - Black Nitride

Manufacturer: Lantac
Manufacturer part number: 01-UP-762-NIT-EBCG
UPC: 712038709175
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AR10 BCG - Full Auto Style for increased mass and lock time.

Lantac's BCG is precision machined from 8620 Steel with a shot-peened bolt manufactured from Carpenter 158 and Magnetically Particle Inspected. 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 carrier's patent-pending design features unique shrouded and forward-facing gas ports that have also been re-sized so that gas is vented differently from a standard carrier. This results in a system that runs flatter with a smoother energy pulse with a softer start to carrier movement.

In addition, 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 position within the buffer tube at the time of cycling and makes it more consistent, resulting in smoother operation. All critical dimensions are hard turned / ground after heat treat and the gas key has been hard chrome lined for the best possible wear resistance.

All E-BCG's feature the LANTAC CP-R360-H™ patent pending domed head cam pin that is machined from 17-4PH Stainless Steel and hardened to H900 condition (45RC approx). The ultra-smooth head reduces wear within the upper receiver. The BCG's 1Lb 2.1oz weight helps to increase lock time and smoother operation. Gas keys are fitted with a gasket sealer & are properly staked at four points and only grade 8 fasteners are used in assembly.


  • Weight 1lb 2.1oz
  • Forward Porting, enlarged vents.
  • Balanced flared boss.
  • 8620 Carrier, Heat Treated, Hard Turned & Ground.
  • 9310 Bolt, 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
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