I've Never Cleaned This Gun

Published on April 11, 2025
Duration: 13:20

This video demonstrates a comprehensive cleaning process for a neglected AR-15 bolt carrier group and upper receiver. It highlights the effectiveness of extended soaking, various brush types, and specialized cleaners like Otis MC7 for removing heavy fouling. The guide also covers cleaning the chamber and charging handle raceway, concluding with proper lubrication and reassembly for restored functionality.

Quick Summary

To clean a heavily fouled AR-15 bolt carrier group, soak it overnight in a strong cleaning solution. Then, use a progression of brushes (polymer, plated, copper) and specialized cleaners like Otis MC7 to remove stubborn gunk. Finally, lubricate the BCG's lugs and rails before reassembly for restored functionality.

Chapters

  1. 00:19Introduction: Neglected BCG
  2. 00:52Otis Cleaning Kit Overview
  3. 01:01Cam Pin and Bolt Condition
  4. 01:26Soaking the BCG Overnight
  5. 01:54Cleaning Kit Features
  6. 02:20Initial Scrubbing with Brushes
  7. 03:01Volatile Cleaning Agent
  8. 03:55BCG After Initial Cleanup
  9. 04:19Otis MC7 Bore Cleaner
  10. 05:16Identifying a Defect
  11. 05:42Reassembling the BCG
  12. 06:38Working on the Lower Receiver (Skipped)
  13. 07:03Cleaning the Upper Receiver
  14. 07:33Chamber Cleaning
  15. 07:36AR-15 Cleaning Brush Alternatives
  16. 08:00Brush Combinations
  17. 08:19Bore Cleaner in the Chamber
  18. 08:5730 Caliber Brush Use
  19. 09:38Cleaning the Barrel
  20. 10:05223 Caliber Bore Snake
  21. 11:03Final Quick Scrub
  22. 11:30Charging Handle Raceways
  23. 12:12Final Quick Scrub on Raceways
  24. 12:20Cleaning Philosophy
  25. 12:51Before and After Comparison

Frequently Asked Questions

How can I clean a very dirty AR-15 bolt carrier group?

For a heavily fouled AR-15 bolt carrier group, start by soaking it in a strong cleaning solution overnight. Afterward, use a combination of polymer, plated, and copper brushes along with specialized cleaners like Otis MC7 to aggressively remove carbon and gunk. Finish with proper lubrication before reassembly.

What are the best tools for cleaning an AR-15 chamber?

While specialized AR-15 chamber brushes exist, you can effectively clean the chamber using a combination of smaller caliber brushes, such as 20-gauge and 30-caliber, attached to a short cleaning rod. Apply bore cleaner and rotate the brushes to break loose fouling.

How often should I clean my AR-15?

The frequency of cleaning depends on usage. For defensive firearms, regular cleaning is recommended. For 'work guns' that are frequently fired, a less intensive cleaning focused on operational readiness, rather than pristine condition, may be sufficient to maintain functionality without excessive time investment.

What is Otis MC7 bore cleaner used for?

Otis MC7 bore cleaner is a versatile solvent designed to tackle a variety of firearm fouling. It is effective at removing plastic shotgun wad residue, lead and powder fouling, and copper deposits, making it suitable for deep cleaning tasks.

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