The Lantac E-BCG (brand part no. 01up556TINEBCG) is a Titanium Nitride-coated bolt carrier group machined from 8620 steel and rated for both full-auto and semi-auto 5.56/.223 rifles. Lantac shot-peens the Carpenter 158 steel bolt and Magnetic Particle Inspects it, then vents gas through a patent-pending, shrouded, forward-facing port design that runs flatter and cooler than a standard carrier while easing pressurization when running a suppressed barrel. A flared boss at the carrier’s tail improves lock consistency for a real accuracy gain, and the CP-R360 domed cam pin, machined from hardened 17-4PH stainless steel, cuts wear inside the upper receiver.

Key Specifications

• Carrier is machined from 8620 steel, heat treated and hard turned and ground.
• Bolt is MPI-inspected, shot-peened Carpenter 158 steel.
• Entire assembly is Titanium Nitride (TiN) coated.
• Uses patent-pending, shrouded forward-facing gas ports for a flatter, cooler-running cycle.
• Reduces upper receiver pressurization when running a suppressed barrel.
• Flared boss at the carrier tail improves lock position consistency and accuracy.
• Uses a CP-R360 domed cam pin machined from hardened 17-4PH stainless steel.
• Weighs approximately 11.7 oz for improved lock time.
• Gas key is staked at four points with grade 8 fasteners.
• Rated for full-auto and semi-auto use.

Frequently Asked Questions

Is this bolt carrier group rated for full-auto use? Yes, it is rated for both full-auto and semi-auto rifles.

Does this reduce pressurization when shooting suppressed? Yes, though it is not a complete fix for a heavily over-gassed rifle.

Is this bolt carrier group made in the USA? Yes, and it is backed by a lifetime warranty.

Buy the Lantac E-BCG

Run a flatter, cooler-cycling bolt carrier group built for hard use. Order it from our Lantac USA lineup of AR bolt carrier groups as soon as it’s ready to ship from our Lubbock, Texas gun shop.