This video details an endurance test of the PWS MkI Mod 1 AR15, featuring its long-stroke gas piston system and adjustable gas regulator. The review also covers the Steiner DRS1X red dot sight, highlighting its features and a critical failure experienced during rapid fire due to potential battery contact issues. The host, demonstrating high authority and technical understanding, concludes the initial test with 360 rounds fired flawlessly by the rifle, despite the optic's malfunction.
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