But let me give you the bad before we get to the good.
Firstly, this thing did NOT fit either of my m4's out of the box. However with some sandpaper I easily was able to file down the ridge that was the issue. If I can attach pics I will, otherwise you will have to do with this description: the mag catch is usualy a rectangular indentation/hole on the left of the magazine, on this mag, its got a pronounced ridge under said indentation. File that down with some rough sand paper n then go over it with some fine grit sandpaper to smooth it n make it look nice again (much better at least) n it should work. Mine seats in both m4 platforms now (one is still a bit tight, more sanding would fix that but then it would be that much looser in my other m4 so I deal wity a slightly hard to pull out mag in one gun. After hitting the mag release, It basically falls out of my other gun, just a testament to how not all mag wells are the same.) so bear this in mind when buying, ya may need some sandpaper too.
SIDENOTE: I contacted evike when my mag wouldnt fit asking if they knew any solutions, and basically whithout question, they issued me a return RMA (which I declined, as I was determined to make this work one way or another) but awesome on evike for thier immediate response to a customer issue.
My only other real complaint is that the fake bullet tips can/will come unscrewed from the casings. Mine did first day of testing. But thankfully I knew about this issue due to research and reading online reviews so I allready had some loctite on hand. Sure enough without the loctite, they were unscrewing themselves due to the vibration. Had I not glued them in place, they eventually would just unscrew and fall out, and you will more than likely loose them, so glue your bullet tips! They look really cool btw (im pretty sure they're real metal too) so ya dont wanna loose these. A really cool addition that IMO really makes this "drum mag" pop and stand out. It really gives the feeling of a double stacked real mag.
I guess if I uave to be nitpickey I could also complain about the battery/charger. Firstly its got some wierd proprietary connection, so good luck finding a backup battery (I haven't looked so I could be wrong it may be easier than I think, but still be warned this is not a "standard" type connection/battery, this aint you're grand daddys AA batteries) and secondly, that also means the charger is a specialized proprietary wall adaptor. I guess ive become spoiled by all the USB chargeable toys nowadays I expect it. Still, all in all, battery works well.
Theres also the maraca sound you get with any hicap mag, so if you want silent stealth, go with midcaps instead.
Wow! Let me repeat. WOW! Now I got a couple hicaps n a few midcaps, but this thing outshines them all. It works flawlessly in sound activated mode, keeping my gun consistently feeding rounds. I have an average ROF so I cannot speak for you guys with crazy guns, but if you got a decent/slightly higher end gun, it should keep up perfectly.
The fake bullets slide back to load BBS (theres also a trap door on the main mag just like any other hicap mag) into the second mag which gravity drains into the main mag. This means midgame, you don't even need to remove your magazine to fill it! Slide back the bullets, pour, slide bullets back. Done. Lets see you do that with any other box/drum magazine. My idiot friend suggested I take off the bullets completely and just afix a bottle cap with a hole in it (to which id obviously screw a bottle of BBS into) to the mag hence increasing my capacity, n sure I could, but well, that would look lame. Effective, im sure, but visually, very lame. On that note, I like to look/feel cool, n this thing looks freakin cool and aggressive, n we all wanna look like BAMF out on the field, it gets us all those sweet sweet airsoft groupies!
Buy it!! But get some sandpaper in case.
"When I pulled this thing out of the box I was extremely happy to have a hi-cap magazine that automatically feeds for me. I plugged the charger in for an hour and came back to try it out. First of all I was confused how open the second magazine and put in more BB's, but I soon figured that out. After filling it with BB's and putting in the battery, I put it in my M4 (which is very difficult to put in and pull out, I had to sit down and wiggle it out, its a very tight fit) and began shooting but I forgot that I didn't wind it or anything. I looked around for the switch it electrically wind it, its not hard to spot if you look closely, but the 3 settings may confuse the users since there are no directions. To manually feed it, you use the winding wheel at the bottom which is hard to wind since it is really deep in the mag. Sometimes the mag jams when I turn the electric feeding off, so i have to wait till no more BB's shoot out in order to automatically wind it again. Besides the cons I think it is a good magazine design, hopefully someone recreates this with high quality material and makes it work better.
800 round capacity
Bullets looks realistic
Comes with battery and charger
Occasionally jams (not sure if its my BBs)
Tough to put in and pull out mag well
Manually winding it takes slower than usual
I'll probably post a video on youtube on how to use the mag soon!
"So far my experience with this mag is great.
Does a fabulous enough job keeping up with my lipo in the auto-wind function, so I haven't needed to use the fast constant-wind mode yet.
I would definitely recommend it.