This video details a comprehensive custom build of the SIG MPX K, focusing on ergonomic and performance upgrades. Key modifications include replacing the factory charging handle with a Radian Raptor, upgrading the trigger to a CMC drop-in, and swapping the barrel for a shorter 4.5-inch version with a Lantac Dragon muzzle brake. The build also incorporates a Midwest Industries M-LOK handguard, a SIG Rattler grip, and an F5 Manufacturing 50-round drum magazine, culminating in a highly personalized and functional PCC.
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