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| Brand | LanTac USA LLC |
|---|---|
| Model | 556 Enhanced Bolt Carrier Grou |
| MPN | 01-UP-556-NIT-EBCG |
| UPC | 712038709168 |
| Category | Parts / Barrels, Chokes & Muzzle Devices |
<p>M16 Full Auto Style for increased mass and lock time. Our BCG is precision machined from 8620 steel with a shot peened bolt manufactured from Carpenter 158 or 9310 and Magnetically Particle Inspected.</p><p><br />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.<br />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.<br />This results in a system that runs flatter with a smoother energy pulse with a softer start to carrier movement.</p><p><br />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.<br />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.</p><p><br />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).<br />The ultra smooth head reduces wear within the upper receiver.<br />The BCG's 11.7oz weight helps to increase lock time and smoother operation.<br />Gas keys are fitted with gasket sealer & are properly staked at four points and only grade 8 fasteners are used in assembly.</p><p>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. <br />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. </p><p> </p><ul> <li>Weight 11.7oz</li> <li>Full Auto & Semi-Auto Compatible</li> <li>Forward Porting enlarged vents.</li> <li>Balanced flared boss.</li> <li>8620 Carrier Heat Treated Hard Turned & Ground.</li> <li>MPI Carpenter 158 or 9310 Bolt Shot Peened Hard Turned / Ground.</li> <li>QPQ Nitride Coating</li> <li>CP-R360 Domed Cam Pin</li> <li>Mil-Spec Gas Rings</li> <li>Mil-Spec Staked Gas Key</li> <li>Grade 8 Hardened Fasteners</li> <li>All Hard Chrome surfaces are to MIL-STD-171 1.2.2.2</li> <li>Shot Peening is conducted with S110 shot Established by Almen Gage A-2 strip .006 -.008</li> <li>Lifetime Warranty.</li> <li>Patented</li></ul><p> </p><p>Made in the USA.</p>