If you use CO2 tanks with your Battle Tested BT-4 Combat paintball gun then look into installing a BT Expansion Chamber Kit. This specially designed unit bolts right onto your Combat without modification. It traps liquid CO2 and lets it convert to gas before entering your marker's valve. This helps to prevent your gun 'going liquid' which results in pressure spikes, erratic velocity and possible marker shuitdown. Get the most from using economical CO2 tanks with the Empire Battle Tested Expansion Chamber Kit for BT-4 Combat!
BT Expansion Chamber Kit for BT-4 features:
- Designed specifcally for the BT-4 Combat and other BT-4 markers
- Includes , steel braided airline and expansion chamber unit
- Helps keep liquid CO2 out of your gun's valve
- Improves consustency and accuracy