VL Charger, 14 inch Terminator Barrel, Empire reloader II hopper, Expansion chamber/ foregrip
low batt indicator
None so far
I bought this hopper looking for something to feed my gun since the e-grip out shoots a gravity hopper. This does just that and is impressive. The sound activation is great. you can just turn the hopper on and forget about it. some complain about the sound activation not being sensitve enough, but mine is loud enough that this is not a problem... If you have that quite if a gun than its probably expensive enough that you would be thinking about getting a more expensive hopper...
Great for lower end markers and someone looking to save a few bucks...