For those of you who (like me) can't make up your mind on which barrel you want to use...

Where / how do you carry your alternate barrel option?

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Polished Internals-Super RT-Full Cyclone Upgrades-RedHot Power Tube-Red Dot-8"Brass-Lapco Suppressor-Apex-MP5 Mag-AirHOg Grip-UMS Bottom & Top Rails-Aluminum Cocking Rod & Grip-MP5 Stock-Remote HPA-Staubli Quick Release.