p90 hi-caps dont shake what so ever. You pull a spring back open a door and fill your bb's then wind the end and the whole reservoir is held under tension pushing towards an angle above the loading nozzle. Only problem i have ever had with them is every 20 rounds You can hear what sounds like gears grinding but its just the slider pushing more bb's forward
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Originally Posted by .Andrew.
turns out i had to take the battey out of the stock and charge it right from the battery wire..not the wire that connects to the gun
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