Shop online at OpticsPlanet to save big on Maxim Defense uppers and upper receiver kits to boost your build. Maxim Defense Industries designs high-quality AR15 upper receivers and upper kits for your Maxim PDW, PDX, and other AR pistol platforms. With included HATEBRAKE muzzle devices, M-LOK compatible handguards, and compatibility with any Mil-Spec lower receiver, Maxim uppers are a reliable upgrade you’re your short-barrel pistols and rifles. Pair it with the Maxim Defense CQB PDW pistol brace to create a compact firearm ideal for close-quarters engagements and self-defense.![]()
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