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Magpul PMAG Gen M3

Magazine Design Philosophy, Testing, and Performance of Magpul Industries PMAG Magazines for the AR/M4/M16/HK416/M249 By Duane Liptak, Director of Product Management and Marketing, Magpul Industries. Director of Magpul Core, Magpul Industries Corp. Building feeding devices for firearms is not a new endeavor, and many materials and methods of construction have been employed for this task. For many years, conventional wisdom regarding magazine construction was that metal was the material most suited to the task. Although other polymer magazines were attempted previously (Orlite, et. al.), the Magpul PMAG became the first generally accepted all-polymer magazine for AR-pattern rifles after its release in 2007. Early military testing drew some criticisms with performance at sub-arctic temperatures and with window material chemical resistance (In the MagLevel window variant). Rumors, assumptions, and outright incorrect information from this early testing and initial evaluations still persist, despite 7 years of materials, manufacturing, and design improvements to the PMAG product line, and millions of fielded magazines in continuous combat use in the GWOT. Current and ongoing testing, both internal and through third parties can easily and thoroughly dispel these rumors and assumptions from any early data. What follows is an explanation of what the PMAG “is”, why it


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