G&G CM16 Rotary - Top-Down-Center (TDC) Bracket Integration Kit (ARP9/ ARP556/ Predator) by Airtech

The TDC (Top-Down-Centre) Trolley Converter is designed for the G&G CM16 (M4) Rotary Hop-up series to radically upgrade the applicable hop-up inside the stock chamber.
Types of Hop-up the TDC Integration Kit can be used for?
The kit may be used in unison with all bucking types and also works perfectly for R-Hop & Flat-hop setups utilizing a trolley system that applies hop perfectly downwards for the most consistent pressure distributed onto the BB. As a result, increased accuracy over longer distances.
Why TDC (Top-Down-Center)?
The idea of using a Top-down-center is a well sought after functionality in airsoft that maximizes the amount of friction allowed onto a BB round and there are third party chambers that can achieve this. However, switching to a third party chamber could carry a series of risks such as double BB feeding, misfeeding, and inconsistent air compression. That is the reason why we opted for an upgrade option for the original hop-up chamber that is specifically designed for the G&G CM16 replicas.
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