The British Just Adopted A New USA Made Combat Rifle

Published on January 18, 2026
Duration: 45:49

This video provides an expert-level review of the Knight's Armament KS-1 and KS-3 rifles, recently adopted by the British Ministry of Defence. Instructor Garand Thumb, with extensive special operations experience, details the rifles' technical specifications, performance on the range, and innovative design features. The review highlights the rifles' superior gas management, barrel longevity, and the advanced E3.2 bolt system, offering insights into why these high-tier American platforms were chosen over competitors in the UK's 'Project Hunter' trials.

Quick Summary

The Knight's Armament KS-1 and KS-3 rifles, chambered in 5.56x45mm NATO, have been adopted by the British Ministry of Defence. These USA-made rifles feature the advanced E3.2 bolt with radiused lugs for enhanced durability, a rigid URX 6 rail system, and barrels made from high-strength Auburn & Duval steel capable of exceeding 50,000 rounds.

Chapters

  1. 00:00Introduction to KS-3 & KS-1
  2. 05:07Range Performance: Bill Drills & Transitions
  3. 09:16Long Range Accuracy & Heat Management
  4. 11:14Project Hunter & British Adoption Context
  5. 14:15Suppressor & Barrel Technology
  6. 16:47Gas System & URX 6 Rail
  7. 19:12The E3.2 Bolt & Internal Improvements
  8. 20:48Lower Receiver & Optics Package

Frequently Asked Questions

What makes the Knight's Armament KS-1/KS-3 suitable for the British military?

The KAC KS-1/KS-3 rifles were selected for their advanced design, including the durable E3.2 bolt with radiused lugs, a URX 6 rail for accessory stability, and an optimized gas system. Their exceptional barrel longevity and performance in rigorous trials like 'Project Hunter' demonstrated their suitability for demanding combat roles.

How does the KAC E3.2 bolt improve reliability compared to standard AR-15 bolts?

The KAC E3.2 bolt features radiused lugs, which reduce stress concentrations at key points, preventing breakage common in standard bolts. It also includes dual ejectors for consistent extraction and a stronger bolt web, significantly enhancing reliability, especially in adverse conditions or short-barreled configurations.

What is the significance of the KAC MCQ2 suppressor on the new British rifle?

The KAC MCQ2 suppressor is primarily designed for flash and signature reduction, crucial for maintaining tactical advantage. Its high-flow design minimizes gas blowback, and it utilizes ceramic ball bearings to prevent carbon locking, ensuring easier removal and maintenance during prolonged use.

What optics are typically used on the Knight's Armament KS-1/KS-3 adopted by the UK?

The adopted optics package often includes a Vortex AMG 1-10x compact LPVO (Low Power Variable Optic) mounted in a Reptilia mount, frequently topped with an Aimpoint ACRO red dot sight. This combination provides versatility for both close-quarters engagements and precise shooting at extended ranges.

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