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KCI USA is a leading manufacturer of aftermarket firearm magazines, recognized for producing durable and reliable feeding solutions for a wide range of platforms. With decades of experience since its founding in 1984, KCI USA offers a comprehensive selection of mags & drums designed for heavy use and consistent performance. Their product line includes magazines for popular firearms such as the MP5, AR-15, AK, and Glock, with many models featuring advanced construction like polymer bodies, steel or aluminum frames, and high-quality springs for dependable function. KCI USA magazines are backed by a limited lifetime warranty and are widely regarded as a trusted choice among shooters seeking affordable, workhorse magazines for sale. Shop the full range of KCI USA magazines and find the right fit for your firearm needs at mags & drums.
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KCI USA KCI-MZ028 Drum Magazine 50rd 40 S&W Compatible w/ Glock 22/23/24/27/35 Black Hardened Steel/Polymer
