Under The Hood - AK103K-S from Krebs

Published on February 11, 2015
Duration: 9:26

This video provides an in-depth look at the Krebs Custom Guns AK103K-S, built on an Arsenal SLR 107FR platform. The review highlights significant modifications, including a pinned and welded 74-style muzzle brake on a 16-inch barrel, a Krebs signature safety, and extensive polishing and smoothing of the internal trigger group components. While the action is noted as exceptionally smooth and accuracy is improved (grouping slightly above 2 MOA), the reviewer expresses dissatisfaction with the Arsenal trigger itself, even after Krebs' modifications.

Quick Summary

The Krebs Custom Guns AK103K-S, built on an Arsenal SLR 107FR, features a 16-inch barrel with a pinned and welded muzzle brake. Krebs performs extensive polishing on the trigger group for a smoother action, though the reviewer notes the Arsenal trigger itself remains a weak point. Accuracy is improved, grouping slightly above 2 MOA with Wolf ammo.

Chapters

  1. 00:07Introduction: Krebs AK103K-S
  2. 00:14Base Platform: Arsenal SLR 107FR
  3. 00:27Short Rifle Design & Barrel Length
  4. 00:36Pinned and Welded Muzzle Brake
  5. 01:04Krebs Signature Safety Lever
  6. 01:17Rifle Refinishing: Krebs Coat
  7. 01:37Opening the 'Hood': Internal Inspection
  8. 01:44Polishing the Trigger Group
  9. 02:04Critique of Arsenal Trigger
  10. 02:20Action Smoothness & Rails
  11. 02:41Disengaging Safety and Trigger
  12. 02:50Removing Trigger Group Pins
  13. 03:22Krebs Retainer vs. Paperclip
  14. 03:42Trigger Group Removal
  15. 04:03Trigger Group Machining Details
  16. 04:19Hammer Removal
  17. 04:38Polished Internal Surfaces
  18. 05:09Trigger Group Summary
  19. 05:12Gas Tube and US-Made Polymer Top
  20. 05:43Cleaning Rod Removal Difficulty
  21. 06:18Handguard Retention Bracket
  22. 06:50Handguard and Heat Shield
  23. 07:06Muzzle Brake Pin and Weld Check
  24. 07:28Quality of Welding
  25. 07:31What You're Paying For
  26. 07:40Rifle Performance: Accuracy
  27. 07:45Grouping with Wolf Ammo
  28. 08:00Krebs Accuracy Improvement vs. Arsenal
  29. 08:35Stock: Standard Arsenal Side Folder
  30. 08:43Stock Hole Purpose: Cleaning Kit
  31. 09:06Overall Impression
  32. 09:14Upcoming Torture Test

Frequently Asked Questions

What is the base platform for the Krebs Custom Guns AK103K-S?

The Krebs Custom Guns AK103K-S is built on the Arsenal SLR 107FR platform. Krebs then applies significant modifications and improvements to this base rifle.

How does Krebs Custom Guns improve the trigger group on the AK103K-S?

Krebs extensively polishes and smooths the internal components of the trigger group, including the trigger itself. This aims to improve the action's smoothness, though the reviewer still finds the Arsenal trigger unsatisfactory.

What is the accuracy performance of the Krebs AK103K-S?

The Krebs AK103K-S demonstrates improved accuracy, grouping slightly above 2 MOA with Wolf hollow point ammunition. This is considered an improvement over the typical 3 MOA grouping of standard Arsenal rifles.

What is the significance of the pinned and welded muzzle brake on the AK103K-S?

The pinned and welded muzzle brake on the 16-inch barrel allows the rifle to meet legal barrel length requirements. However, it prevents the brake from being removed and can make cleaning rod removal more challenging.

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