How To Clean & Lubricate A FN SCAR 16 or SCAR 17 Rifle (HD)

Published on May 31, 2017
Duration: 22:28

This guide details the comprehensive cleaning and lubrication process for FN SCAR 16 and SCAR 17 rifles, applicable even after extensive use, including suppressed firing. It covers complete disassembly, specific cleaning techniques for the piston system and barrel, and proper lubrication points to ensure optimal function and longevity of the firearm. The instruction is presented as if for a new SCAR owner, emphasizing clarity and thoroughness.

Quick Summary

To clean an FN SCAR 16 or 17, first ensure it's unloaded and then disassemble the rifle by removing the lower receiver, stock, charging handle, and bolt carrier group. Focus on cleaning the piston and gas regulator thoroughly due to carbon buildup from suppressed fire. Use CLP for lubrication on most parts, but keep the piston assembly dry. Reassemble and perform a function check.

Chapters

  1. 00:13Introduction and Rifle Condition
  2. 01:06Unloading and Initial Takedown
  3. 01:41Removing Recoil Spring and Charging Handle
  4. 02:00Removing Bolt and Carrier Assembly
  5. 02:15Disassembling Bolt Components
  6. 02:26Adjusting Gas Regulator
  7. 03:41Removing the Piston
  8. 04:18Cleaning Supplies Overview
  9. 05:50Cleaning the Piston and Regulator
  10. 07:37Cleaning the Barrel
  11. 08:42Cleaning the Bolt Assembly
  12. 09:32Cleaning the Lower Receiver
  13. 10:40Cleaning the Chamber
  14. 11:12Final Barrel Patches
  15. 12:12Wiping Down Parts
  16. 12:59Detailed Bolt and Carrier Cleaning
  17. 14:30Cleaning Lower Receiver (FDE Specifics)
  18. 15:27Lubrication - Carrier and Rails
  19. 16:31Lubrication - Bolt
  20. 16:46Lubrication - Lower Receiver/Trigger
  21. 17:21Reassembly - Piston and Regulator
  22. 18:28Reassembly - Bolt Carrier and Bolt
  23. 19:15Reassembly - Recoil Spring and Upper/Lower Join
  24. 20:23Reassembly - Lower Receiver to Upper
  25. 20:41Function Check
  26. 20:59Final Wipe Down and Conclusion

Frequently Asked Questions

How do you disassemble an FN SCAR rifle for cleaning?

To disassemble an FN SCAR for cleaning, first ensure it's unloaded. Remove the lower receiver by pushing the takedown pin, then detach the stock. Pull the charging handle back to remove it, followed by the bolt and carrier assembly. Finally, remove the firing pin, cam pin, and piston.

What are the key areas to clean on an FN SCAR after shooting suppressed?

After shooting an FN SCAR suppressed, the piston system and its regulator are the primary areas requiring thorough cleaning due to significant carbon buildup. The barrel and bolt assembly also need attention, though typically less so than the piston.

What lubrication is recommended for an FN SCAR rifle?

Break Free CLP is generally recommended for lubricating most parts of the FN SCAR, including the carrier, bolt, and trigger mechanism. However, the piston assembly components and their receiver interfaces should be installed dry according to manufacturer recommendations.

How do you adjust the gas regulator on an FN SCAR if it's stuck?

If the FN SCAR's gas regulator is stuck due to carbon, depress the detent pin with a punch or the charging handle. Rotate it to the 4 o'clock position, then to the standard 12 o'clock position for unsuppressed firing. This may require some force to break carbon buildup.

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