TR Enabling Obsidian AR-15 Bolt Carrier Group (BCG) Review

Published on July 28, 2014
Duration: 4:50

This review covers the TR Enabling AR-15 Bolt Carrier Group (BCG) featuring their 'Obsidian' coating. The Obsidian coating is a nickel-based, Teflon-impregnated finish with a low coefficient of friction (0.06) and high Rockwell hardness (70). It offers advantages like reduced staining and a matte finish, making it ideal for those concerned with signature reduction. The BCG is constructed from 8620 steel for the carrier and Carpenter 158 steel for the bolt, both meeting military specifications. The gas key is one-piece billet steel with good staking, and the bolt is MPI and shot peened. The extractor is billet with a full-auto spring buffer and O-ring for positive ejection. The reviewer recommends lubrication and notes the coating's benefits for suppressed shooting.

Quick Summary

The TR Enabling AR-15 Bolt Carrier Group (BCG) features an 'Obsidian' coating, a nickel-Teflon blend with a low friction coefficient (0.06) and high hardness (70 Rockwell). Its graphite color reduces staining and its matte finish minimizes shine, making it ideal for reduced signature and suppressed fire.

Chapters

  1. 00:35Introduction to TR Enabling Obsidian BCG
  2. 01:00Materials and Construction
  3. 01:38What is Obsidian Coating?
  4. 02:00Obsidian Coating Advantages: Staining and Signature
  5. 02:43Coated Components
  6. 02:56Comparison to Previous TR Enabling BCG
  7. 03:11Lubrication and Maintenance Recommendations
  8. 03:23Benefits for Suppressed Fire
  9. 03:33Pricing and Availability
  10. 03:58Conclusion and Q&A

Frequently Asked Questions

What are the key benefits of the TR Enabling Obsidian coating on an AR-15 BCG?

The Obsidian coating, a nickel-Teflon blend, offers a low coefficient of friction (0.06) and high hardness (70 Rockwell). Its graphite color significantly reduces visible staining from carbon and heat, and its matte finish minimizes shine, making it ideal for reduced signature.

What materials are used in the TR Enabling Obsidian AR-15 BCG?

The carrier is made from 8620 steel, and the bolt is constructed from Carpenter 158 steel, both meeting military specifications. The gas key is a one-piece billet steel construction, and the extractor is also billet with enhanced features for positive ejection.

Is the TR Enabling Obsidian BCG suitable for use with suppressors?

Yes, the Obsidian coating's properties, including reduced friction and easier cleanup, make this BCG particularly beneficial for users running suppressors. It can help maintain smoother operation and extend intervals between necessary lubrication.

How is the bolt in the TR Enabling Obsidian BCG inspected?

Each bolt undergoes Magnetic Particle Inspection (MPI) to ensure there are no internal flaws or cracks. Additionally, all bolts are shot peened to enhance their fatigue strength and overall durability for reliable performance.

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