When this mag arrived at my house, it didn't work. After taking the back off of the left half of the mag and putting in the batteries, I plugged in the pressure switch and tried to test it's winding: no dice. I narrowed down the problem to the pressure switch itself, I took the rubber casing off of the switch to find that the switch was never even soldered correctly. After fixing this issue and recovering the switch, it worked. This wasn't too much of a hassle, but for someone who doesn't know how to solder, this would have been a major problem. Working, this mag is very functional with an incredible amount of BB storage, a very long wind, good feed to gun, and an awesome look, but is moderately loud, and hard to reload, both of which are things I can deal with.
-Looooootts of BB's
-Good feed to gun
-Looks awesome (on my gun at least)
-Came damaged/not functional
-Difficult to reload
-Mag must be disassembled to put in batteries
-It's shape is something to get used to.