On the Range with the LWRCI SIX8

Published on March 30, 2015
Duration: 2:53

This video features Jason Miller, Senior Designer Engineer for LWRCI, discussing the LWRCI SIX8 rifle. He explains the advantages of the 6.8 SPC caliber for the AR platform, highlighting its increased projectile size and downrange capability compared to 5.56mm. Miller also details the engineering challenges and solutions for accommodating the wider 6.8 SPC magazine, including custom forgings for the upper and lower receivers. The discussion extends to the use of Cerakote as a robust and durable finish, applied over hard coat anodizing for enhanced protection.

Quick Summary

The 6.8 SPC cartridge offers enhanced downrange capability over 5.56mm due to its larger projectile size (90-115 grains vs. 55 grains). LWRCI engineered custom receivers and magazines to reliably accommodate this wider cartridge on the AR platform. Cerakote, a robust two-part epoxy with ceramic elements, is applied over hard coat anodizing for superior durability.

Chapters

  1. 00:13Introduction with Mark Keith and Jason Miller
  2. 00:20Why 6.8 SPC for LWRCI?
  3. 00:27Advantages of 6.8 SPC Caliber
  4. 00:52Magazine Design for 6.8 SPC
  5. 01:18Engineering Challenges for 6.8 SPC
  6. 01:36Cerakote Coating on LWRCI Firearms
  7. 01:44Benefits of Cerakote
  8. 02:07Cerakote Over Hard Coat Anodizing
  9. 02:14Conclusion and More Information

Frequently Asked Questions

What are the primary advantages of the 6.8 SPC cartridge over 5.56mm in an AR platform?

The 6.8 SPC cartridge offers significantly larger projectile size, with common weights ranging from 90 to 115 grains compared to 5.56mm's typical 55 grains. This translates to enhanced downrange capability and energy transfer while maintaining the same rifle platform size and weight.

What engineering challenges did LWRCI face when developing the SIX8 for 6.8 SPC ammunition?

The main challenge was accommodating the wider 6.8 SPC cartridge, which required developing a specialized Magpul magazine. To ensure reliable feeding and proper fit, LWRCI also engineered custom forgings for both the upper and lower receivers.

Why does LWRCI use Cerakote on its firearms, and what are its benefits?

LWRCI uses Cerakote for its exceptional robustness and durability, making it highly resistant to abuse. It's a two-part epoxy with ceramic interstitial elements that enhance hardness, providing a long-lasting and protective finish for the firearm.

Does LWRCI apply Cerakote directly to the metal, or is there a base coating?

LWRCI applies Cerakote over a hard coat anodizing step. This dual-layer approach ensures maximum durability and protection, combining the benefits of both the anodized base and the Cerakote topcoat.

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