5KU CNC Aluminum TDC Hop-Up Chamber for KJW/ASG SHADOW2 ( GBSD2040 )

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5KU TDC (Top-Dead-Center) hop-up for a Hi-Capa is a precision upgrade that replaces the traditional side-dial adjustment system with a top-down screw mechanism.
Superior Accuracy: Provides a centered backspin for straighter and more predictable flight paths.
Heavy BB Compatibility: The granular screw adjustment makes it much easier to "zero" the pistol for heavier BB weights, such as 0.28g to 0.43g.