This video provides an in-depth look at the KE Arms KP-9, a 9mm polymer lower receiver. Featuring insights from Ian McCollum and Russell Phagan, it details the design, compatibility, and unique technical aspects of the KP-9, including its Glock magazine integration, adjustable ejector, and blowback bolt mechanics. The discussion highlights practical considerations for builders and shooters looking to assemble a 9mm AR-15 platform.
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