Colion Noir details his HK MR556 SBR build, aiming for an HK416 clone. He evaluates various upgrades, highlighting the Geissele rail and trigger for improved ergonomics and performance. While some parts like the Steiner DBAL-A3 were removed for weight, others like the SureFire light and Magpul sights offer functional benefits despite their cost.
This video explores the performance of subsonic .223 ammunition, demonstrating its significantly reduced noise when suppressed, comparable to .22 LR. However, it highlights practical issues like failure to cycle in semi-automatic AR-15 platforms and a substantial loss of kinetic energy. The presenter suggests .300 Blackout as a more effective alternative for subsonic applications in AR-style rifles.
This video presents a formal, standardized test of 5.56mm suppressors using Mil-Std 1474D protocols and a Bruel & Kjaer sound meter. An unsuppressed AR-15 baseline registered 167dB, with tested suppressors ranging from 133dB to 143dB. The data aims to provide objective performance comparisons for various brands like AAC, SilencerCo, Surefire, and Griffin Armament.
This review covers the Armasight Zeus OPMOD thermal imaging sight, highlighting its 640p resolution and 2-16x magnification. It explains the difference between thermal and night vision, demonstrating a unique zeroing technique using hand warmers. The video also touches on the decreasing market cost of thermal technology and includes range testing on an IWI Tavor rifle.
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