LANTAC E-BCG Nickel Boron Enhanced Bolt Carrier Group EBCG (5.56/.223)

LANTAC E-BCG Nickel Boron Enhanced Bolt Carrier Group EBCG

Product Description

M16 Full Auto FA Style for increased mass and lock time.
Our new EBCG is precision machined from 8620 Steel with a shot peened bolt manufactured from Carpenter 158 and Magnetically Particle Inspected.
The entire carrier assembly is NiB, Electroless Nickel Boron coated with the patented, advanced UCT EXO process, unlike standard NiB coatings.
This offers extreme lubricity with a friction coefficient of .02 and surface hardness of 82-85 Rockwell C.
The carriers patented and patent pending design features unique shrouded and forward facing gas ports that have also been re sized so that gas is vented differently to a standard carrier.
This results in a system that runs flatter with a smoother energy pulse.
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 lock position within the upper and makes it more consistent, resulting in an accuracy improvement.
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™ 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 11.7oz weight helps to increase lock time and smoother operation.
Gas keys 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.
However, it should be noted that the E-BCG™ is not a complete solution for this issue and all rifles are different. 'Over Gassed' guns will suffer to a larger extent from this problem.   

Weight 11.7oz

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.
NiB UCT EXO 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 1.2.2.2
Shot Peening is conducted with S110 shot, Established by Almen Gage A-2 strip .006 -.008
Lifetime Warranty.


Made in the USA.


    UPC Code: 784672665339
    Manufacturer: LanTac USA LLC
    Manufacturer Part #: E-BCG
    Model: M16
    Type: Bolt Carrier Group
    Finish/Color: Nickel Boron Coated
    Description: .223REM/556NATO Enhanced M16 Bolt Carrier Group
    Subcategory: Bolts & Bolt Carrier Groups