Mk14 SAGE EBR Chassis | Install + M1A/M14/m305 Field Strip & Lubrication

Published on April 5, 2020
Duration: 16:24

This guide details the installation of a SAGE EBR chassis onto an M1A/M14/M305 rifle, followed by a comprehensive field strip and lubrication procedure for the M1A/M14/M305 platform. It covers removing and reinstalling key components like the trigger group, recoil assembly, operating rod, and bolt, emphasizing proper lubrication points for smooth operation. The video also highlights a common installation pitfall of overtightening the chassis screw, which can impede the operating rod.

Quick Summary

To install a SAGE EBR chassis on an M1A/M14/M305, first field strip the rifle. Remove the trigger group, handguard, and then carefully lift the barreled action out of the old stock. Place the barreled action into the new chassis, aligning grooves, and secure it with the main chassis screw, being careful not to overtighten. Reassemble the rifle components, ensuring proper lubrication on wear points like the bolt and operating rod for smooth function.

Chapters

  1. 00:00Introduction: Mk14 SAGE EBR Chassis & M1A/M14/M305
  2. 01:03Trigger Group Removal
  3. 01:37Handguard Removal
  4. 02:36Barreled Action Removal from Chassis
  5. 03:36Recoil Assembly Removal
  6. 04:33Operating Rod Removal
  7. 05:10Bolt Removal
  8. 06:09Cleaning and Lubrication Tips
  9. 08:17Bolt Reinstallation
  10. 08:36Operating Rod Reinstallation
  11. 09:41Recoil Assembly Reinstallation
  12. 11:30Barreled Action Installation into Chassis
  13. 12:11Handguard Reinstallation
  14. 12:40Trigger Group Reinstallation
  15. 13:36Function Check and Troubleshooting
  16. 15:00Bonus: Marlin Dark Series Lever Action

Frequently Asked Questions

How do you remove the trigger group from an M1A/M14 rifle?

To remove the trigger group from an M1A/M14, use a 4mm Allen key inserted into the hole at the back of the receiver. Pry this open, ensuring the trigger is cocked for easier removal. The entire trigger group assembly will then detach.

What are the key lubrication points for an M1A/M14 rifle during field stripping?

During field stripping, focus lubrication on the bolt's roller, bearing surfaces, locking lugs, and extractor. Also, apply grease to the receiver grooves and the upper surface where the bolt rides. Lightly oiling the recoil spring can improve action smoothness.

What is a common mistake when installing an M1A/M14 into a SAGE EBR chassis?

A common mistake is overtightening the bottom screw that attaches the barreled action to the chassis. This can bind the operating rod, preventing the rifle from cycling smoothly. It's crucial to tighten this screw just enough to secure the action without causing resistance.

How do you remove the operating rod from an M1A/M14 during disassembly?

To remove the operating rod, pull the bolt fully to the rear. Then, locate the disassembly notch on the receiver. Lift the operating rod to engage this notch and then pull it forward and out of the receiver assembly.

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