TDC System (Top Dead Center) pressure is a special design element of the hop-up chamber that allows optimal adjustment of pressure on the BB through the protrusion of the Hop-up rubber.
The pressure is directly applied above the barrel window, perfectly perpendicular downwards, not by a lever at an angle.
This enables players to achieve better shooting accuracy, stronger hop-up effects, even with heavy ammunition, for each individual shot.
Ideal for R-HOP, S-HOP, and traditional rubbers with large pressure surfaces like Maple Leaf, T-NT.

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