This video explores the history of the monolithic polymer AR-15 lower receiver, tracing its origins from early Colt prototypes in the late 60s/early 70s to its development and refinement by Cavalry Arms in 2000. It details how the design was later acquired by GWACS Armory and eventually revitalized by KE Arms with their KP-15 lower. The discussion highlights the material advantages of glass-filled Nylon for this specific design, which differs from attempts to simply make standard AR receivers from polymer due to inherent structural weaknesses. The video examines the engineering challenges and solutions throughout the evolution of this unique AR-15 component.
This video from the Royal Armouries explores the arms and armour of the English Civil War, focusing on infantry and cavalry equipment from the 1640s. It offers a look into this historical period through the museum's collection. The Royal Armouries is the UK's national collection of arms and armour, and their channel features behind-the-scenes content, combat demonstrations, jousting coverage, and curator tours.
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