Uploaded January 2026 | Updated September 2026, 2 weeks ago
The KAC KS-1 (L403A1)—adopted by the UK under Project HUNTER—represents the latest evolution of the Stoner system, building on the SR-15/SR-16 lineage with better durability, ambi controls, and a rifle designed around modern optics and suppressors. In this video we run the KS-3 (11.5”) and compare it to the KS-1 (13.7”), explaining how the KS family moves beyond the original M16 concept and what that means for real-world performance today.
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00:00 – Knights Armament KS3 Intro
1:30 – KS1 Primer
5:15 – KS3 Live Fire Testing | First Shots
9:17 – Long Range Test | 350–550 Yards with an 11.5 Barrel
11:15 – KS3 Technical Breakdown | Full Rifle Analysis
14:59 – KS1 / KS3 differences
19:18 – MCQ2 Suppressor Review | Flash, Sound & Backpressure
24:15 – KS1 KS3 Barrel Technology | Aubert & Duval Steel Explained
29:11 – KS1 / KS3 Gas System Explained | Why It Shoots So Soft
31:01 – URX6 Rail System | Strength & Laser Zero Retention
32:44 – Knights E3.2 Bolt | Reliability Upgrades Explained
37:02 – Ambidextrous Controls | KS3 Lower Receiver
39:09 – Buffer System & Tuning | Why Knights Got It Right
40:57 – IR, Coatings & Military Features
42:00 – Optics Setup | Vortex AMG 1–10 & Aimpoint ACRO
42:25 – KS3 Final Verdict | Is It Worth the Price?
The KAC KS-1 (L403A1)—adopted by the UK under Project HUNTER—represents the latest evolution of the Stoner system, building on the SR-15/SR-16 lineage with better durability, ambi controls, and a rifle designed around modern optics and suppressors. In this video we run the KS-3 (11.5”) and compare it to the KS-1 (13.7”), explaining how the KS family moves beyond the original M16 concept and what that means for real-world performance today.
Our Company and Merch! Onward Research onwardresearch.com
henrythumb.com
Insta: instagram.com/garand_thumb
GarandThumb on Facebook: facebook.com/garandthumb1
00:00 – Knights Armament KS3 Intro
1:30 – KS1 Primer
5:15 – KS3 Live Fire Testing | First Shots
9:17 – Long Range Test | 350–550 Yards with an 11.5 Barrel
11:15 – KS3 Technical Breakdown | Full Rifle Analysis
14:59 – KS1 / KS3 differences
19:18 – MCQ2 Suppressor Review | Flash, Sound & Backpressure
24:15 – KS1 KS3 Barrel Technology | Aubert & Duval Steel Explained
29:11 – KS1 / KS3 Gas System Explained | Why It Shoots So Soft
31:01 – URX6 Rail System | Strength & Laser Zero Retention
32:44 – Knights E3.2 Bolt | Reliability Upgrades Explained
37:02 – Ambidextrous Controls | KS3 Lower Receiver
39:09 – Buffer System & Tuning | Why Knights Got It Right
40:57 – IR, Coatings & Military Features
42:00 – Optics Setup | Vortex AMG 1–10 & Aimpoint ACRO
42:25 – KS3 Final Verdict | Is It Worth the Price?
