Lantac

LANTAC E-BCG Gen2 DI Side Charger Enhanced Bolt Carrier Group for .223/5.56 Caliber. - This bolt carrier group will not work in standard AR-15 upper receivers. It must be used with a side charging upper receiver. For guaranteed fit we recommend our LA-N15 Raven Side Charging Billet Upper Receiver. - M16 Full Auto Style for increased mass and lock time. - Our new 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 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 (Excluding Handle) 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. - This Side Charger version comes complate with our 440 Stainless Steel Knuled screw in handle. - Weight 11.7oz (Excluding Handle). - Forward Porting enlarged vents. - Balanced flared boss. - 8620 Carrier Heat Treated Hard Turned & Ground. - MPI Carpenter 158 or 9310 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. - Patented. - Made in the USA.